Fuse and Relay: 2017 Cadillac CTS Fuse Diagrams Guide
Fuse placement is crucial in the complex system of automotive operation because it protects electrical parts and keeps a car running smoothly. As we dive deeper into the realm of auto repair, we’ll be concentrating on the 2017 Cadillac CTS and how important fuse replacement is. Maintaining the electrical integrity of this upscale sedan requires an understanding of the fuses and where they are located on the fuse diagram. Fuse protection and essential system powering—from lighting and entertainment to delicate electronic components—are the unsung heroes of the electrical world who draw attention when their jobs are done well. This thorough guide attempts to shed light on the 2017 Cadillac CTS fuse replacement procedure, offering priceless insights into interpreting the fuse diagram and guaranteeing the long-term dependability of this advanced car. This investigation aims to equip you with the knowledge required to confidently and easily navigate the electrical complexities of the 2017 Cadillac CTS, regardless of your level of experience with do-it-yourself projects or whether you are a Cadillac owner looking to demystify fuse replacement. 2024 Cadillac CT5 Specs, Price, Features, Mileage and Review
Electrical System
Electrical System Overload The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the electrical load is too heavy a circuit breaker opens, protecting the circuit until overcurrent condition is removed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect electrical devices in the vehicle. Replace a blown or open fuse with a new one of 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. 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. The wiper function is available immediately after the wiper switch is set to off, and back to on. To protect the wiper motor from overheating, the wipers may slow down when the windshield is dry for a long period. If a period of dry operation, or little moisture, exceeds 10 minutes, the wipers may switch to intermittent operation, and remain there. When moisture is again detected on the windshield, wiper operation will return to the operator-selected speed. 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.
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 possible. To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block.
Engine Compartment Fuse Block
The underhood fuse block is on the passenger 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. Caution Spilling liquid on any electrical component of the vehicle may damage it. Always keep the covers on any electrical component. 
Fuses Usage
- 1 –
- 2 –
- 3 Passenger motorized safety belt
- F4 –
- F5 –
- Driver power seat
- 7 –
- 8 Headlamp washer relay
- 9 –
- 10 –
- 11 –
- 12 –
- 13 Passenger power seat
- 14 –
- 15 Passive entry/Passive start
- 16 –
- 17 Headlamp washer
- 18 –
- 19 ABS pump
- 20 ABS valve
- 21 –
- 22 Driver motorized safety belt
- 23 Wiper control relay
- 24 Wiper speed relay
- 25 Engine control module relay
- 26 –
- 27 –/Heated seat 2
- 28 –/Reverse lockout
- 29 AFS AHL/Pedestrian protection
- 30 –
- 31 Passenger window switch
- 32 –
- 33 Sunroof
- 34 Front wiper
- 35 Steering column lock
- 36 Rear bussed electrical center/Ignition
- 37 –/MIL/Ignition
- 38 Aero shutter
- 39 O2 sensor/Emissions
- 40 Ignition coils/ Injectors
- 41 –/Ignition coils/ Injectors
- 42 Engine control module
- 43 –
- 44 –
- 45 Washer
- 46 Rear washer relay
- 47 Front washer relay
- 48 Instrument panel body/Ignition
- 49 Fuel system control module/Ignition
- 50 Heated steering wheel
- 51 Engine control module/Ignition
- 52 Transmission control module/Ignition
- 53 Coolant pump
- 54 Coolant pump relay
- 55 –
- 56 Transmission control module/–
- 57 Low-beam headlamp relay
- 58 High-beam headlamp relay
- 59 Run/Crank relay
- 60 Starrer 2 relay
- 61 Vacuum pump relay
- 62 Starter relay
- 63 A/C control relay 64 Adaptive headlamp leveling
- 65 Left HID headlamp
- 66 Right HID headlamp
- 67 Left/Right high-beam headlamp
- 68 Headlamp leveling motor
- 69 Horn
- 70 Horn relay
- 71 Cooling fan
- 72 Starter 2
- 73 Brake vacuum pump
- 74 Starter
- 75 A/C clutch
- 76 –
Relays Usage
- 7 –
- *8 Headlamp washer
- 9 –
- 10 –
- 12 –
- 23 Wiper control relay
- 24 Wiper speed
- 25 Engine control module
- 26 –
- 44 –
- 46 Rear washer
- 47 Front washer
- *54 Coolant pump *57 Low-beam headlamp
- 58 High-beam headlamp
- 59 Run/Crank
- *60 Starter 2
- *61 Vacuum pump
- 62 Starter
- 63 A/C control
- 70 Horn
Instrument Panel Fuse Block
The instrument panel fuse block is in the end of the driver side of the instrument panel. 
To access the fuses, remove the end panel by gently prying with a plastic tool near each clip, beginning at the point shown. 
To install the end cover, insert the tabs on the back of the cover into the slots in the instrument panel at the points shown. Align the clips with the slots in the instrument panel, and press the cover into place. The vehicle may not be equipped with all of the fuses and relays shown. 
Fuses Usage
- Motorized cupholder
- 3 Electric steering column lock
- 4 –
- 5 –HVAC control
- 6 Tilt and telescoping steering column
- 8 Data link connector
- 9 Glovebox release
- 10 Shunt
- 11 Body control module 1
- 12 Body control module 5
- 13 Body control module 6
- 14 –
- 15 Body control module 7
- 16 –Transmission control module
- 17 –
- 18 –
- 19
- 20
- 21
- 22 Sensing diagnostic module/Automatic occupant sensing
- 23 Radio/DVD/HVAC control
- 24 Display
- 25 Heated steering wheel
- 26 Wireless charger
- 27 Steering wheel controls
- 28 –
- 29 Visor
- 30 –
- 31
- 32 –
- 33 Front HVAC blower
- CB1 Accessory power outlet
- CB7 –
- K10 Retained accessory power
- K605 Logistics
- K644 Glove box release
Rear Compartment Fuse Block
The rear compartment fuse block is behind a cover on the driver side of the rear compartment. The vehicle may not be equipped with all of the fuses, relays, and features shown. 
Fuses Usage
- 1 Rear driver control module/ DC DC transformer
- 2 Left window
- 3 Body control module
- *4 A/C inverter
- 5 Passive entry/Passive start battery 1
- 6 Body control module 4
- 7 Heated mirrors
- 8 Amplifier
- 9 Rear window defogger
- 10 Glass break
- *11 Trailer connector
- 12 OnStar (if equipped)
- 13 Right window
- 14 Electric parking brake
- 15 –
- 16 Trunk release
- *17 Run relay
- *18 Logistics relay
- *19 –
- 20 Rear window defogger relay
- 21 Mirror window module
- 22 – Fuses Usage
- 23 Canister vent
- 24 Body control module 2
- *25 Rear vision camera
- *26 Front ventilated seats
- *27 SBZA/LDW/EOCM
- *28 Trailer/Sunshade
- *29 Rear heated seats
- *30 Semi-active damping system
- *31 Transfer case control module/Rear control drive module
- 32 Theft module/Universal garage door opener/Rain sensor
- *33 UPA
- *34 Radio/DVD
- *35 Exhaust valve
- *36 Trailer
- 37 Fuel pump/Fuel system control module
- *38 Fuel pump
- 39 – Fuses Usage
- 40 Run/Crank
- *41 Fuel pump prime
- *42 Memory seat module
- 43 Body control module 3
- 44 –
- 45 Battery regulated voltage control
- 46 Engine control module battery
- 47 –
- 48 –
- *49 Trailer module
- 50 Door lock security
- 51 Rear closure release
- 52 Rear closure 2
- 53 –
- 54 Door lock security
- 55 –
- *56 Fuel door
* Optional
FAQs
Depending on the model and trim, the 2017 Cadillac CTS’s fuse box may be found under the dashboard or in the engine compartment.
A visible broken wire or a discolored appearance are common signs of blown fuses.
The 2017 Cadillac CTS’s interior fuse box controls a number of features, such as the audio system components, power windows, and interior lights.
It is true that the 2017 Cadillac CTS frequently has extra fuses. These are neatly kept in the fuse box kit and can be changed out as needed.
Generally, changing a fuse in a 2017 Cadillac CTS doesn’t require the use of any special tools. You can change out fuses with regular pliers or your fingers.
Changing out the amp fuses in the 2017 Cadillac CTS fuse box is not advised as this could cause electrical problems. Use each fuse according to its amp rating at all times.
To guarantee safety, it’s advisable to turn off the ignition, disconnect the battery, and wait for a few minutes before replacing the fuses in the 2017 Cadillac CTS.
Check the fuses in your 2017 Cadillac CTS on a regular basis and replace any that blow. This is particularly crucial if your car is having electrical problems.
The 2017 Cadillac CTS fuse box does not have a set sequence for changing fuses. To prevent confusion, it is advised to replace fuses one at a time.
The 2017 Cadillac CTS’s audio system, power windows, and lighting may not work properly if a fuse blows. Check the fuse diagram to ensure precise identification.
It is not advised to change the fuses in a 2017 Cadillac CTS while the car is operating. Prior to attempting to replace the fuse, turn off the ignition.
After changing a fuse, the 2017 Cadillac CTS’s electronic systems typically reset themselves.
It is advised to seek professional assistance for a comprehensive electrical system inspection if problems continue after replacing the fuse in the 2017 Cadillac CTS.
Useful Links
View Full PDF: 2017 Cadillac CTS Owner’s Manual| Auto User Guide
2024 Cadillac CT5 Specs, Price, Features, Mileage and Review
2017 Cadillac CTS Display Setting | How to use Display Screen