2019 Cadillac ATS Fuse Diagram | Replacing Fuses and Fuse Box
Cadillac released the ATS model in 2019. It is a high-end and stylish car known for its strong performance and cutting-edge features. Over time, different electrical parts in the car may start to malfunction, requiring fuse repairs. Fuse boxes are very important for keeping the car’s electrical systems safe from damage caused by electrical problems or overloads. Auto owners need to know how to get into the fuse box and find and change the faulty fuse when a part of their car isn’t working right. For this process to work, the vehicle’s fuse diagram must be carefully studied, and the faulty fuse must be precisely replaced to keep the ATS’s electrical systems running. This blog post will show you in detail how to change the fuses in a 2019 Cadillac ATS. It will also explain how the fuse box is set up and give you useful tips on keeping the car’s electrical system in good shape.
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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.
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.
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.
Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
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.
Engine Compartment Fuse Block
The engine compartment 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 seat belt |
| 4 | – |
| 5 | – |
| 6 | Driver power seat |
| 7 | – |
| 9 | – |
| 10 | – |
| 11 | – |
| 12 | – |
| 13 | Passenger power seat |
| 14 | – |
| 15 | – |
| 16 | – |
| 17 | Headlamp washer |
| 18 | – |
| 19 | Antilock brake system pump |
| 20 | Antilock brake system valve |
| 21 | – |
| 22 | Driver motorized seat belt |
| 27 | Heated seat 2 |
| 28 | Reverse lockout |
| 29 | Adaptive forward lighting, Automatic headlamp leveling/ Pedestrian protection |
| 30 | – |
| 31 | Passenger window switch |
| 32 | – |
| 33 | Sunroof |
| 34 | Front wiper |
| 35 | Steering column lock |
| 36 | Rear bussed electrical center/Ignition |
| 37 | Malfunction indicator lamp/ Ignition |
| 38 | Aeroshutter |
| 39 | O2 sensor/Emissions |
| 40 | Ignition coil even/O2 sensor |
| 41 | Ignition coil odd |
| 42 | Engine control module |
| 43 | – |
| 45 | Washer |
| 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 |
| 55 | – |
| 56 | Transmission control module |
| 64 | Adaptive headlamp leveling |
| 65 | Left HID headlamp |
| 66 | Right HID headlamp |
| 67 | Left/Right high beam headlamp |
| 68 | Headlamp leveling motor |
| 69 | Horn |
| 71 | Cooling fan |
| 72 | Starter 2 |
| 73 | Brake vacuum pump |
| 74 | Starter 1 |
| 75 | Air conditioning clutch |
| 76 | – |
| Relays | Usage |
| 8 | Headlamp washer |
| 23 | Wiper control |
| 24 | Wiper speed |
| 25 | Engine control module |
| 26 | – |
| 44 | – |
| 46 | Rear washer |
| 47 | Front washer |
| 54 | Coolant pump |
| 57 | Low beam headlamp relay |
| 58 | High beam headlamp |
| 59 | Run/Crank |
| 60 | Starter 2 |
| 61 | Vacuum pump |
| 62 | Starter 1 |
| 63 | Air conditioning control |
| 70 | Horn |
Instrument Panel Fuse Block
The instrument panel fuse block is at the end of the driver’s 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 |
| 2 | Cupholder motor |
| 3 | Electric steering column lock |
| 4 | – |
| 5 | – |
| 6 | Tilt and telescopic steering column |
| 8 | Data link connector |
| 9 | Glove box 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 | Auxiliary power outlet |
| 20 | Lighter |
| 21 | Wireless charger |
| 22 | Sensing diagnostic module/Automatic occupant sensing |
| 23 | Radio/DVD/Heating, ventilation/Air conditioning control |
| 24 | Display |
| 25 | Heated steering wheel |
| 26 | Wireless charger |
| 27 | Steering wheel controls |
| 28 | – |
| 29 | Visor vanity lamp |
| 30 | – |
| 31 | Retained accessory power/Accessory |
| 32 | – |
| 33 | Front heating, ventilation/Air conditioning control blower |
| Circuit Breakers | Usage |
| CB1 | Auxiliary power outlet |
| CB7 | – |
| Relays | Usage |
| K10 | Retained accessory power/Accessory |
| K605 | Logistics |
| K644 | Retained accessory power/Accessory / Glove box release |
Rear Compartment Fuse Block
The rear compartment fuse block is behind a cover on the driver’s side of the rear compartment.
The vehicle may not be equipped with all of the fuses, relays, and features shown
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| Fuses | Usage |
| 1 | Rear driver control module/DC DC transformer |
| 2 | Left window |
| 3 | Body Control Module 8 |
| 4 | Alternate current 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 |
| 13 | Right window |
| 14 | Electric parking brake |
| 15 | – |
| 16 | Trunk release |
| 19 | Logistics |
| 21 | Mirror window module |
| 22 | – |
| 23 | Canister vent |
| 24 | Body Control Module 2 |
| 25 | Rear vision camera |
| 26 | Front ventilated seats |
| 27 | Side blind zone alert/ Lane departure warning/External object calculating module |
| 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 remote system/Rain sensor |
| 33 | Park Assist |
| 34 | Radio/DVD |
| 35 | – /Exhaust valve (V-Series) |
| 36 | Trailer |
| 37 | Fuel system control module |
| 38 | Fuel pump prime/ Exhaust valve (V Series) |
| 39 | – |
| 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 |
| 53 | – |
| 55 | – |
| Relays | Usage |
| 17 | Trailer |
| 18 | Logistics |
| 20 | Rear window defogger |
| 40 | Run crank 2 (V Series) |
| 41 | Fuel pump prime/ Run crank 2 |
| 50 | Child door lock security |
| 51 | Rear closure |
| 52 | Rear closure 2 |
| 54 | Door lock security |
| 56 | Fuel door |
FAQs
The fuse box in a Cadillac ATS 2019 is typically located in the passenger compartment on the driver’s side, under the instrument panel.
The fuse box diagram typically illustrates the location and function of each fuse and relay in the vehicle.
There may be more than one fuse box in the Cadillac ATS 2019, typically one in the engine compartment and another inside the vehicle.
Typically, you’ll need a pair of needle-nose pliers or a fuse puller to remove the blown fuse, as well as a replacement fuse of the correct amperage.
If a fuse blows, you should first identify the problem that caused the fuse to blow, then locate the corresponding fuse in the fuse box and replace it with a new fuse of the same amperage.
A blown fuse can often be identified by a visual inspection of the fuse. The metal strip inside the fuse will be broken or melted.
Common reasons for fuses to blow include short circuits, overloaded circuits, or faulty electrical components.
The Cadillac ATS 2019 typically uses standard automotive blade fuses of various amperages, such as 5A, 10A, 15A, etc.
No, it is not safe to replace a blown fuse with one of a higher amperage. Doing so can lead to damage to the vehicle’s electrical system or even a fire hazard.
Yes, you can use a multimeter to check fuses for continuity or resistance, which can help determine if a fuse is blown.
Some vehicles may come with spare fuses stored in the fuse box or included with the vehicle’s toolkit.
To prevent fuses from blowing, ensure that electrical components are in good working condition and avoid overloading circuits.
In most cases, you can replace a fuse in your Cadillac ATS 2019 yourself, as long as you follow proper safety procedures and use the correct replacement fuse.
If you can’t find the cause of a blown fuse, it may be best to consult a professional mechanic or electrician to diagnose the issue.
Yes, always disconnect the vehicle’s battery before working on the electrical system to prevent the risk of electric shock or damage to the vehicle’s components.
Useful Link:
View full PDF: 2019 Cadillac ATS User Manual | Auto User Guide
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Dashboard Display: Cadillac ATS 2019 Instrument Cluster Guide