2013 Cadillac CTS Owners Manual

6. Remove the three air cleaner

housing cover screws.

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WARNING (CONTINUED)

helps to stop flames if the engine backfires. Use caution when working on the engine and do not drive with the air cleaner/filter off.

Notice: If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when you are driving.

Cooling System The cooling system allows the engine to maintain the correct working temperature.

3.6L V6 Shown, 3.0L V6 Engine

and 6.2L V8 Engine Similar

1. Engine Cooling Fan(s) (Out

of View)

2. Coolant Surge Tank and

Pressure Cap

{ WARNING

An electric engine cooling fan under the hood can start up even when the engine is not running

(Continued)

Vehicle Care

10-17

WARNING (CONTINUED)

and can cause injury. Keep hands, clothing, and tools away from any underhood electric fan.

{ WARNING

Heater and radiator hoses, and other engine parts, can be very hot. Do not touch them. If you do, you can be burned. Do not run the engine if there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle.

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10-18

Vehicle Care

Notice: Using coolant other than DEX-COOL® can cause premature engine, heater core, or radiator corrosion. In addition, the engine coolant could require changing sooner, at 50 000 km (30,000 mi) or 24 months, whichever occurs first. Any repairs would not be covered by the vehicle warranty. Always use DEX-COOL (silicate-free) coolant in the vehicle.

Engine Coolant The cooling system in the vehicle for all engines and the intercooler is filled with DEX-COOL®. This coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000 mi), whichever occurs first. The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 10‑22.

What to Use

{ WARNING

Adding only plain water or some other liquid to the cooling system can be dangerous. Plain water and other liquids, can boil before the proper coolant mixture will. The coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, the engine could get too hot but you would not get the overheat warning. The engine could catch fire and you or others could be burned. Use a 50/ 50 mixture of clean, drinkable water and DEX-COOL coolant.

Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. If using this mixture, nothing else needs to be added. This mixture: . Gives freezing protection down

to −37°C (−34°F), outside temperature.

. Gives boiling protection up to

129°C (265°F), engine temperature.

. Protects against rust and

corrosion.

. Will not damage aluminum parts. . Helps keep the proper engine

temperature.

Notice: If improper coolant mixture, inhibitors, or additives are used in the vehicle cooling system, the engine could overheat and be damaged. Too much water in the mixture can freeze and crack engine cooling parts. The repairs would not be covered by the warranty. Use only the proper mixture of engine

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coolant for the cooling system. See Recommended Fluids and Lubricants on page 11‑13. Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health. Checking Coolant The vehicle must be on a level surface when checking the coolant level. The engine coolant reservoir is in the engine compartment on the driver side of the vehicle. See Engine Compartment Overview on page 10‑6. Check to see if coolant is visible in the surge tank. If the coolant inside the surge tank is boiling, do not do anything else until it cools down.

If coolant is visible but the coolant level is not at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant surge tank, but be sure the cooling system is cool before this is done. If the engine is warm or hot, the coolant level should be at or above the FROID/FULL COLD line on the side of the coolant surge tank. If the engine is cold, the coolant level should be near the FROID/FULL COLD line on the side of the coolant surge tank. If it is not, there could be a leak in the cooling system. How to Add Coolant to the Surge Tank

{ WARNING

You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol

(Continued)

Vehicle Care

10-19

WARNING (CONTINUED)

and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine.

Notice: This vehicle has a specific coolant fill procedure. Failure to follow this procedure could cause the engine to overheat and be severely damaged.

{ WARNING

Steam and scalding liquids from a hot cooling system can blow out and burn you badly. Never turn the cap when the cooling system, including the surge tank pressure cap, is hot. Wait for the cooling system and surge tank pressure cap to cool.

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10-20

Vehicle Care

If coolant is needed, add the proper DEX-COOL coolant mixture at the coolant surge tank. If no coolant is visible in the surge tank, add coolant as follows: 1. Remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise about one-quarter turn and then stop. If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left.

2. Keep turning the pressure cap

slowly and remove it.

3. Fill the coolant surge tank with

the proper mixture, to slightly above the FROID/FULL COLD line on the side of the coolant surge tank.

4. With the coolant surge tank

pressure cap off, start the engine and let it run until you can feel the upper radiator hose getting hot. The upper radiator hose is the top hose coming out of the radiator, on the passenger side of the vehicle. Watch out for the engine cooling fans. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower, add more of the proper mixture to the coolant surge tank until the level reaches the FROID/FULL COLD line on the side of the coolant surge tank. 5. Replace the pressure cap. Be

sure the pressure cap is hand-tight and fully seated.

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Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. Recheck the coolant level in the bottle next time you use your vehicle to ensure the system is full when cold. Checking Coolant in the Intercooler System (CTS-V) The vehicle must be on a level surface when checking the coolant level. The super charged engine intercooler coolant fill neck is in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6. On the coolant fill neck, there is a cold fill region between the two horizontal lines shown. Check to see if coolant is visible in the coolant fill neck. If the coolant is not visible or below the cold fill

region in the fill neck, add a 50/ 50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant fill bottle, but be sure the cooling system is cool before this is done. Adding Coolant to the Intercooler System Coolant (CTS-V)

1. Remove the intercooler system

pressure cap when the intercooler system hoses are no longer hot. Turn the pressure cap slowly counterclockwise

Vehicle Care

10-21

about one-quarter of a turn. If you hear a hiss, wait for that to stop. This allows any pressure still left to be vented.

2. Keep turning the pressure cap

slowly and remove it.

3. Add the proper DEX-COOL

coolant mixture to the fill neck until the coolant is within the cold fill region. With the intercooler system pressure cap off, start the engine and let it run for a couple of minutes. Then turn the engine off. By this time, the coolant level inside the fill neck may be lower. If the level drops where coolant is no longer within the cold fill region of the fill neck with the engine off, add more of the DEX-COOL coolant mixture to the fill neck until the level is again visible in the cold fill region.

4. Replace the pressure cap tightly.

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Vehicle Care

Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. If the coolant is not at the proper level when the system cools down again, see your dealer.

Engine Overheating The vehicle has several indicators to warn of engine overheating. There are two engine hot messages that may be displayed in the Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑34 for more information. You may decide not to lift the hood when one of these warnings appear, but get service help right away. See Roadside Service (U.S. and Canada) on page 13‑7 or Roadside Service (Mexico) on page 13‑9. If you do decide to lift the hood, make sure the vehicle is parked on a level surface.

Then check to see if the engine cooling fans are running. If the engine is overheating, the fan(s) should be running. If they are not, do not continue to run the engine and have the vehicle serviced. Notice: Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the warranty. See Overheated Engine Protection Operating Mode on page 10‑23 for information on driving to a safe place in an emergency. If Steam Is Coming from the Engine Compartment { WARNING

Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it

(Continued)

WARNING (CONTINUED)

off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. If you keep driving when the engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool.

If No Steam Is Coming from the Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: . Climbs a long hill on a hot day. . Stops after high-speed driving.

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Idles for long periods in traffic. Tows a trailer.

If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off. 2. Turn the heater on to the highest

3.

temperature and to the highest fan speed. Open the windows as necessary. In heavy traffic, let the engine idle in N (Neutral) while stopped. If it is safe to do so, pull off the road, shift to P (Park) or N (Neutral) and let the engine idle.

If the temperature overheat gauge is no longer in the overheat zone or an overheat warning no longer displays, the vehicle can be driven. Continue to drive the vehicle slow for about 10 minutes. Keep a safe vehicle distance from the car in front of you. If the warning does not come back on, continue to drive normally.

If the warning continues, pull over, stop, and park the vehicle right away. If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down. Also, see “Overheated Engine Protection Operating Mode” next in this section.

Overheated Engine Protection Operating Mode This operating mode allows the vehicle to be driven to a safe place in an emergency. Should a hot engine condition exist, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, there is a loss in power and engine performance. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.

Vehicle Care

10-23

Power Steering Fluid

See Engine Compartment Overview on page 10‑6 for the location of the power steering fluid reservoir. When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. How to Check Power Steering Fluid To check the power steering fluid: 1. Turn the key off and let the

engine compartment cool down.

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10-24

Vehicle Care

2. Wipe the cap and the top of the

reservoir clean.

3. Unscrew the cap and wipe the

dipstick with a clean rag.

4. Replace the cap and completely

tighten it.

5. Remove the cap again and look at the fluid level on the dipstick.

The level should be between the HOT and COLD marks. If necessary, add only enough fluid to bring the level between the marks. What to Use To determine what kind of fluid to use, see Recommended Fluids and Lubricants on page 11‑13. Always use the proper fluid.

Washer Fluid

What to Use When adding windshield washer fluid to the vehicle, be sure to read the manufacturer's instructions before use. If you will be operating

your vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing. Adding Washer Fluid The WASHER FLUID LOW ADD FLUID message will appear on the Driver Information Center (DIC) when the fluid level is low. See Washer Fluid Messages on page 5‑45.

Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview on page 10‑6 for reservoir location.

Notice

. When using concentrated

washer fluid, follow the manufacturer instructions for adding water.

. Do not mix water with

ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system.

. Fill the washer fluid tank only

three-quarters full when it is very cold. This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.

. Do not use engine coolant

(antifreeze) in the windshield washer. It can damage the windshield washer system and paint.

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Vehicle Care

10-25

Replacing Brake System Parts The braking system on a vehicle is complex. Its many parts have to be of top quality and work well together if the vehicle is to have really good braking. The vehicle was designed and tested with top-quality brake parts. When parts of the braking system are replaced, be sure to get new, approved replacement parts. If this is not done, the brakes might not work properly. For example, installing disc brake pads that are wrong for the vehicle, can change the balance between the front and rear brakes — for the worse. The braking performance expected can change in many other ways if the wrong replacement brake parts are installed.

Brakes This vehicle has disc brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. The sound can come and go or be heard all the time the vehicle is moving, except when applying the brake pedal firmly.

{ WARNING

The brake wear warning sound means that soon the brakes will not work well. That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.

Notice: Continuing to drive with worn-out brake pads could result in costly brake repair.

Some driving conditions or climates can cause a brake squeal when the brakes are first applied or lightly applied. This does not mean something is wrong with the brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly tighten wheel nuts in the proper sequence to torque specifications in Capacities and Specifications on page 12‑2. Brake linings should always be replaced as complete axle sets. Brake Pedal Travel See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service might be required. Brake Adjustment Every time the brakes are applied, with or without the vehicle moving, the brakes adjust for wear.

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10-26

Vehicle Care

Brake Fluid

The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview on page 10‑6 for the location of the reservoir. There are only two reasons why the brake fluid level in the reservoir might go down:

The brake fluid level goes down because of normal brake lining wear. When new linings are installed, the fluid level goes back up.

. A fluid leak in the brake

hydraulic system can also cause a low fluid level. Have the brake

hydraulic system fixed, since a leak means that sooner or later the brakes will not work well.

Do not top off the brake fluid. Adding fluid does not correct a leak. If fluid is added when the linings are worn, there will be too much fluid when new brake linings are installed. Add or remove brake fluid, as necessary, only when work is done on the brake hydraulic system.

{ WARNING

If too much brake fluid is added, it can spill on the engine and burn, if the engine is hot enough. You or others could be burned, and the vehicle could be damaged. Add brake fluid only when work is done on the brake hydraulic system.

When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light on page 5‑21.

What to Add Use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants on page 11‑13. Always clean the brake fluid reservoir cap and the area around the cap before removing it. This helps keep dirt from entering the reservoir.

{ WARNING

With the wrong kind of fluid in the brake hydraulic system, the brakes might not work well. This could cause a crash. Always use the proper brake fluid.

Notice

. Using the wrong fluid can

badly damage brake hydraulic system parts. For example, just a few drops of mineral-based oil, such as engine oil, in the brake

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hydraulic system can damage brake hydraulic system parts so badly that they will have to be replaced. Do not let someone put in the wrong kind of fluid.

. If brake fluid is spilled on the

vehicle's painted surfaces, the paint finish can be damaged. Be careful not to spill brake fluid on the vehicle. If you do, wash it off immediately.

Battery The battery is in the trunk, behind the trim panel, on the passenger side of the vehicle. Refer to the replacement number shown on the original battery label when a new battery is needed.

{ WARNING

Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

After a power loss, such as disconnecting the battery or removing the maxi fuses in the power distribution fuse block, the following steps must be performed to calibrate the electronic throttle control. If this is not done, the engine will not run properly. 1. Turn the ignition on but do not

start the engine.

2. Leave the ignition on for at least

three minutes so that the electronic throttle control will cycle and relearn its home position.

3. Turn the ignition off.

Vehicle Care

10-27

4. Start and run the engine for at

least 30 seconds.

Vehicle Storage

{ WARNING

Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 10‑101 for tips on working around a battery without getting hurt.

Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger.

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10-28

Vehicle Care

All-Wheel Drive If your vehicle is equipped with all-wheel-drive, this is an additional system that needs lubrication. Transfer Case

When to Check Lubricant It is not necessary to regularly check the transfer case fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.

What to Use Refer to the Maintenance Schedule on page 11‑3 to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 11‑13.

Starter Switch Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle.

How to Check Lubricant

1. Drain Plug 2. Fill Plug To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the filler plug hole, located on the transfer case, you'll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole. Use care not to overtighten the plug.

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2. Firmly apply both the parking brake and the regular brake. See Parking Brake (Electric) on page 9‑33 or Parking Brake (Manual) on page 9‑33. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts.

3. For automatic transmission

vehicles, try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer for service. For manual transmission vehicles, put the shift lever in Neutral, push the clutch pedal down halfway, and try to start the engine. The vehicle should start only when the clutch pedal is pushed down all the way to the floor. If the vehicle starts when the clutch pedal is not pushed all the way down, contact your dealer for service.

Automatic Transmission Shift Lock Control Function Check

{ WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.

1. Before starting this check, be

sure there is enough room around the vehicle. It should be parked on a level surface.

2. Firmly apply the parking brake. See Parking Brake (Electric) on page 9‑33 or Parking Brake (Manual) on page 9‑33. Be ready to apply the regular brake immediately if the vehicle begins to move.

3. With the engine off, turn the

ignition on, but do not start the engine. Without applying the

Vehicle Care

10-29

regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer for service.

Ignition Transmission Lock Check While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.

The ignition should turn to LOCK/OFF only when the shift lever is in P (Park).

. With the key access ignition

system, the ignition key should come out only in LOCK/OFF. See Ignition Positions (Keyless Access) on page 9‑15 or Ignition Positions (Key Access) on page 9‑17.

Contact your dealer if service is required.

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Vehicle Care

Park Brake and P (Park) Mechanism Check { WARNING

When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move.

Park on a fairly steep hill, with the vehicle facing downhill. Keeping your foot on the regular brake, set the parking brake.

To check the parking brake's holding ability: With the engine running and the transmission in N (Neutral), slowly remove foot pressure from the regular brake pedal. Do this until the vehicle is held by the parking brake only.

To check the P (Park) mechanism's holding ability: With the engine running, shift to P (Park). Then release the parking brake followed by the regular brake.

Contact your dealer if service is required.

Wiper Blade Replacement Windshield wiper blades should be inspected for wear or cracking. See Maintenance Schedule on page 11‑3. It is a good idea to clean or replace the wiper blade assembly on a regular basis or when worn. For proper windshield wiper blade length and type, see Maintenance Replacement Parts on page 11‑15. To replace the wiper blade assembly: 1. Turn the ignition to ON/RUN with

the engine off.

2. Turn on the windshield wipers and turn them off again when the wipers are in the out-wipe position. The driver side blade will be straight up and down on the windshield.

3. Pull the windshield wiper assembly away from the windshield.

4. Lift up the wiper blade

assembly cap.

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5. Pull the wiper blade assembly down far enough to release it from the J-hooked end of the wiper arm. Slide the assembly away from the arm. Allowing the wiper blade arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by your warranty. Do not allow the wiper blade arm to touch the windshield.

6. Replace the blade with a

new one.

Vehicle Care

10-31

To remove the cover:

7. Reinstall the wiper blade

assembly by sliding it over the wiper arm to engage the J-hooked end. Pull up on the assembly to lock it into place. 8. Repeat the steps for the other

wiper.

Rear Wiper Blade Replacement (Wagon) The rear wiper blade and wiper arm have a cover for protection. The cover must be removed before the wiper blade can be replaced.

1. Slide a plastic tool under the

cover and push upward to unsnap.

2. Slide the cover toward the wiper

blade tip to unhook it from the blade assembly.

3. Remove the cover. 4. After wiper blade replacement,

ensure that the cover hook slides into the slot in the blade assembly.

5. Snap the cover down to secure. To remove the wiper blade: 1. Lift the wiper arm away from the

windshield.

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10-32

Vehicle Care

2. Push the release lever (2) to

disengage the hook and push the wiper arm (1) out of the blade assembly (3).

3. Push the new blade assembly securely on the wiper arm until the release lever clicks into place.

4. Replace the wiper cover.

Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.

Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑35. For any bulb‐changing procedure not listed in this section, contact your dealer.

Halogen Bulbs

{ WARNING

Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.

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High Intensity Discharge (HID) Lighting

Fog Lamps

{ WARNING

The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer or a qualified technician service them.

After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal.

LED Lighting This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

To replace a front fog lamp bulb: 1. Pull out the push-pins on the

underside of the protection shield to remove the shield.

2. Reach up behind the front

bumper area from under the vehicle to access the lamp housing.

3. Remove the electrical connector

from the bulb by lifting the two plastic clips.

4. Remove the bulb socket from

the lamp housing by turning the bulb socket one-quarter turn counterclockwise.

Vehicle Care

10-33

5. Pull the old bulb from the lamp

housing keeping the bulb straight as you pull it out. Install a new bulb.

6. 7. Reinstall the electrical connector

by pushing in the two plastic clips.

8. Push the bulb socket into the

lamp housing and turn the socket one-quarter turn clockwise.

License Plate Lamp (Coupe and Sedan) To replace one of these bulbs:

1. Push the tab to remove the

license plate lamp.

2. Turn the license plate lamp

assembly down to remove it.

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Vehicle Care

3. Turn the socket

counterclockwise and remove it.

4. Pull the bulb straight out to

remove it.

5. Push the new bulb straight into

the socket.

6. Reverse Steps 1 through 3 to

reinstall the license plate lamp assembly.

License Plate Lamp (Wagon) To replace one of these bulbs: 1. Open the liftgate. See Liftgate

on page 2‑18.

Passenger Side Shown, Driver

Side Similar

2. Push the left end of the lamp

assembly toward the right.

3. Turn the lamp assembly down to

remove it from the liftgate.

4. Turn the bulb socket (1)

counterclockwise to remove it from the lamp assembly (3).

5. Pull the bulb (2) straight out of

the bulb socket.

6. Push the replacement bulb

straight into the bulb socket and turn the bulb socket clockwise to install it into the lamp assembly. 7. Turn the lamp assembly into the

liftgate engaging the clip side first.

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8. Push on the lamp side opposite the clip until the lamp assembly snaps into place.

Replacement Bulbs

Exterior Lamp

Fog Lamp (Uplevel Only) License Plate Lamp

Bulb

Number

H11LL

W5WLL

For replacement bulbs not listed here, contact your dealer.

Vehicle Care

10-35

Headlamp Wiring An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off. Windshield Wipers If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.

Electrical System

Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect power devices in the vehicle. Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (36,1)

10-36

Vehicle Care

Fuses and Circuit Breakers The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as you can.

To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block (CTS-V Wagon) on page 10‑47 or Engine Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑36
or Engine Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑40 or Engine Compartment Fuse Block (CTS Wagon) on page 10‑44 and Rear Compartment Fuse Block (CTS Wagon) on page 10‑54 or Rear Compartment Fuse Block (CTS-V Wagon) on page 10‑56 or Rear Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑50 or Rear Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑52.

Engine Compartment Fuse Block (CTS Coupe and Sedan) The underhood fuse block is on the left side of the engine compartment.

Lift the fuse block cover to access the fuses. The vehicle may not be equipped with all of the fuses and relays shown. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (37,1)

Vehicle Care

10-37

Mini-Fuses

27

28
29

30

31

33

34

35

36

38

Usage Body Control Module 4
Navigation Motor All-Wheel Drive Transmission Control Module Battery Horn Left Low-Beam Headlamp (Domestic Non-HID Only) Pedestrian Protection System (Export Only) Body Control Module 3
Body Control Module 2
Headlamp Washer (HID Only)

Mini-Fuses

Usage

Mini-Fuses

11

19

22
23

Not Used Antilock Braking System (ABS) Display Not Used

24

25

26

Usage Body Control Module 1
Automatic Forward Lighting System (HID Only) Body Control Module 5

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (38,1)

10-38

Vehicle Care

Mini-Fuses

Usage

Mini-Fuses

Usage

Mini-Fuses

Usage

40

41

43

46

47

50

51

Right Low-Beam Headlamp (Domestic Non-HID Only) Air Conditioning Compressor Clutch Low-Beam Daytime Running Lamps (non-HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) Left High-Beam Headlamp Right High-Beam Headlamp Right Daytime Running Lamp, Windshield Washer Pump Airbag System Ignition Switch

52

54

55
56

57

58

59

Engine Control Module Ignition, Transmission Control Module Ignition Power Moding (Immobilizer Module, Ignition Switch) Not Used Windshield Wipers Right Low-Beam (HID Only) Daytime Running Lamps (non-HID), Left Low-Beam (HID Only) Right Daytime Running Lamp (HID Only), Right Trailer Turn Signal (Export Only)

60

61

62

64

65

69

70
71

72

73
74

Instrument Panel Auxiliary Power Outlet Air Quality Sensor, Inside Rear View Mirror, Rear Camera Ignition Steering Wheel Illumination Front Fog Lamps (HID Only) Body Control Module 6, Body Control Module 7
Emissions 1
Even Ignition Coils Engine Control Module Emissions 2
Odd Ignition Coils

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (39,1)

Mini-Fuses

75

76
77
78
79
80
81

J-Case Fuses

10

Usage Transmission Output Speed Sensor, Brake Vacuum Relay Spare Spare Spare Spare Spare Spare

J-Case Fuses

13

14

15
16
17

18

37

Usage

Relays

Cooling Fan 2
Cooling Fan 1
Starter Brake Vacuum Pump Antilock Brake System Motor

Vehicle Care

10-39

Usage

Relays

Usage

Not Used Electric Parking Brake Not Used Not Used Blower Motor Rear Window Defogger Not Used

Usage Cooling Fan 2
Cooling Fan 1
Starter Rear Window Defogger Instrument Panel Auxiliary Power Outlet

12

20

21

32

39

42

44

45

48

Horn Headlamp Washer (HID Only) Cooling Fan (Series/ Parallel) Air Conditioning Compressor Clutch Windshield Washer Pump Right Daytime Running Lamp, Trailer Turn Signal Low-Beam (non-HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) Front Fog Lamps (HID Only) High-Beam Headlamps

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (40,1)

10-40

Vehicle Care

Relays

Usage

49

53
63
66
67

68

Daytime Running Lamps (Non-HID), Low-Beam Headlamps (HID) Not Used Main Ignition Windshield Wipers Powertrain Windshield Wipers High Speed

Engine Compartment Fuse Block (CTS-V Coupe and Sedan) This fuse block is on the left side of the engine compartment.

The vehicle may not be equipped with all of the fuses and relays shown. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

Lift the fuse block cover to access the fuses.

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (41,1)

Vehicle Care

10-41

Mini‐Fuses

27

28
29

30

31
33

34

35

36

38

40

41

Usage Body Control Module 4
Navigation Motor Not Used Transmission Control Module Battery Horn Not Used Pedestrian Protection System (Export Only) Body Control Module 3
Body Control Module 2
Headlamp Washer (HID Only) Not Used Air Conditioning Compressor Clutch

Mini‐Fuses

Usage

Mini‐Fuses

11

19

22
23

Not Used Antilock Braking System (ABS) Display Sunroof

24

25

26

Usage Body Control Module 1
Automatic Forward Lighting System (HID Only) Body Control Module 5

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (42,1)

10-42

Vehicle Care

Mini‐Fuses

43

46

47

50

51

52

54

55

Usage Left Daytime Running Lamps (HID) Left High‐Beam Headlamp Right High‐Beam Headlamp Right Daytime Running Lamp, Windshield Washer Pump Airbag System Ignition Switch Engine Control Module Ignition, Transmission Control Module Ignition Power Moding (Immobilizer Module, Ignition Switch) Intercooler Pump

Mini‐Fuses

Usage

Mini‐Fuses

56

57

58

59

60

61

62

64

65

Windshield Wipers Right Low‐Beam (HID Only) Left Low‐Beam (HID Only) Right Daytime Running Lamp (HID Only) Instrument Panel Auxiliary Power Outlet Air Quality Sensor, Inside Rear View Mirror, Rear Camera Ignition Steering Wheel Illumination Front Fog Lamps (HID Only)

69

70
71
72
73

74

75
76
77
78
79
80
81

Usage Body Control Module 6, Body Control Module 7
Emissions 1
Even Ignition Coils Odd Ignition Coils Emissions 2
Engine Control Module Not Used Spare Spare Spare Spare Spare Spare

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (43,1)

J-Case Fuses

10

13

14

15
16
17

18

37

Usage

Relays

Cooling Fan 2
Cooling Fan 1
Starter Not Used Antilock Brake System Motor Not Used Electric Parking Brake Not Used Not Used Blower Motor Rear Window Defogger Magnetic Ride/ Suspension Control

12

20

21

32

39

42

Usage Cooling Fan 2
Cooling Fan 1
Starter Rear Window Defogger Instrument Panel Auxiliary Power Outlet Horn Headlamp Washer (HID Only) Cooling Fan (Series/ Parallel) Air Conditioning Compressor Clutch Windshield Washer Pump Right Daytime Running Lamp

Vehicle Care

10-43

Relays

44

45

48

49

53
63
66
67

68

Usage Left Daytime Running Lamp (HID) Front Fog Lamps (HID Only) High‐Beam Headlamps Low‐Beam Headlamps (HID) Not Used Main Ignition Windshield Wipers Powertrain Windshield Wipers High Speed

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (44,1)

10-44

Vehicle Care

Engine Compartment Fuse Block (CTS Wagon) This fuse block is on the left side of the engine compartment.

Lift the fuse block cover to access the fuses. The vehicle may not be equipped with all of the fuses and relays shown. Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

Mini‐Fuses

Usage

Mini‐Fuses

11

19

22
23

Not Used Antilock Braking System (ABS) Display Not Used

24

25

26

Usage Body Control Module 1
Automatic Forward Lighting System (HID Only) Body Control Module 5

Cadillac CTS/CTS-V Owner Manual - 2013 - CRC - 4/18/12

Black plate (45,1)

Mini‐Fuses

27

28
29

30

31

33

34

35

36

38

Usage Body Control Module 4
Navigation Motor All-Wheel Drive Transmission Control Module Battery Horn Left Low‐Beam Headlamp (Domestic Non‐ HID Only) Pedestrian Protection System (Export Only) Body Control Module 3
Body Control Module 2
Headlamp Washer (HID Only)

Vehicle Care

10-45

Mini‐Fuses

Usage

Mini‐Fuses

Usage

40

41

43

46

47

50

51

Right Low‐Beam Headlamp (Domestic Non‐ HID Only) Air Conditioning Compressor Clutch Low‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) Left High‐Beam Headlamp Right High‐Beam Headlamp Right Daytime Running Lamp Airbag System Ignition Switch

52

54

55
56

57

58

59

Engine Control Module Ignition, Transmission Control Module Ignition Power Moding (Immobilizer Module, Ignition Switch)