2012 Cadillac CTS Problems

What owners report

Owners of the 2012 Cadillac CTS most often report electrical problems, moisture inside the headlight assemblies, and brake-related symptoms, with many complaints filed at relatively low mileage. A second cluster of reports involves front suspension hardware and subframe cracking at higher mileage, and several owners describe stalls or loss of power that dealers could not reproduce.

1. 1
   Exterior lighting

   Headlights fogging with moisture inside

   • 8 complaints (12%)
   • median 28,500 mi at 7.5 yrs old (6 state mileage, few)
   • filed 2018–2021

   Owners describe condensation and water building up inside the sealed headlight assemblies, which dims the light output at night and in some cases leaves the lens stained or the bulb failing. Several say the car was garaged and lightly driven, and that dealers told them there was no applicable recall or declined coverage; some replaced both headlight assemblies at their own cost. Others report broken mounting tabs letting rear lamp housings pull away from the body. Reported from around 6,000 to 68,000 miles, often after cold or damp weather and sometimes on vehicles only a few years old.

   What to check: Inspect both headlight lenses for fogging, water droplets or yellowing and check that rear lamp housings sit flush against the body. Ask whether either headlight assembly has already been replaced.

   2 excerpts from owner complaints in NHTSA records

   “Both headlights on the vehicle have had to be replaced very recently (spring/summer) following a cold and harsh winter. We believe that the problem identified with the srx models extends to the CTS and perhaps other Cadillac models given the number on the street with a single headlight; however, Cadillac has denied our claim. The cost of repair of both headlights exceeded $600.”

   NHTSA complaint #11230716, filed 2019-07, 68,000 miles

   “While driving heard clanking under the car for about 2 blocks then stoped. Took it to the dealer and found out 2 bolts had backed out of the drive shaft and one had sheared. Had the exact same problem with a 2011 CTS. I had purchased a warranty when I bought the car in 2018, car was repaired. I did notify Cadillac. Right front headlight has moisture. Understand Cadillac used inferior seals previously. Will need to replace. Light cost approximately $250.00.”

   NHTSA complaint #11228889, filed 2019-07, 65,300 miles
2. 2
   Electrical system

   Stalls and sudden loss of electrical power

   • 20 complaints (31%)
   • median 56,500 mi at 4.2 yrs old (14 state mileage)
   • filed 2014–2023

   Complaints describe the engine shutting off or the car losing all electrical power while driving, sometimes at low speed and sometimes at road speed, with the vehicle restarting afterward or drifting to a stop. Some owners link it to the ignition switch and key ring, and describe repeated dealer visits where the failure could not be duplicated. Several complaints concern the remedy mailed under the ignition recall, which owners felt did not address the switch itself. Reported from about 12,000 to 65,000 miles, often in stop-and-go or turning situations.

   Recall 14V3940001 related service bulletin

   What to check: Confirm with a dealer that recall 14V394000 was completed and whether the ignition switch itself was ever replaced. Ask the seller whether the car has ever shut off while driving.

   2 excerpts from owner complaints in NHTSA records

   “The car ignition switch would sometimes automatic cut off by itself. I have notified this Cadillac dealer about this car several times, even with the engine sounds like it is about to blow up, I don't think they believed me because I was upset about a car that the entire car had ben painted inside and out, motor and all, but I quests when something happens , then they will believe me.”

   NHTSA complaint #10617421, filed 2014-07, 17,200 miles

   “The electrical system in the Cadillac seems to have a lot of issues and brings a lot of concerns to me, especially in transporting family members. First the navigation screen will sputter and start sporadically flashing on an off, second the controls on the steering wheels will randomly stop working, third the windows will not close or when opened they will close and then reopen automatically multiple times, fourth the ABS/traction control/stabilitrack seems to have levels of error which I will explain more of. …”

   NHTSA complaint #10662668, filed 2014-12, 28,400 miles
3. 3
   Brakes

   Brake pedal to the floor or weak braking

   • 9 complaints (14%)
   • median 30,000 mi at 2.8 yrs old (7 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 2013–2023

   Owners report the brake pedal going to the floor or the car not slowing when the brakes were applied, in a few cases resulting in a collision. Others describe grinding and metal-on-metal contact with all four pads worn out well before expected, and one report notes a front brake line failing. Complaints also mention brake, ABS, traction control and stability warning lights together with a loss of power. Mostly reported between about 13,000 and 50,000 miles, with some at higher mileage.

   Recall 11V536000

   What to check: Ask whether the vacuum brake booster pushrod nut recall 11V536000 applies to the VIN and was completed, check pedal firmness and fluid level, and have pad and rotor thickness measured.

   2 excerpts from owner complaints in NHTSA records

   “Heard a grinding noise when brakes were applied, immediately took to dealership, was told brakes were completely gone, metal on metal. Asked why no warning brakes were going bad and why all four brakes needed to be replaced on so called high end/top quality vehicle like a Cadillac at only 30,000 miles and was told because it hasn't been driven enough and brakes wore faster due to rust . …”

   NHTSA complaint #10947692, filed 2017-01, 30,300 miles

   “The contact owns a 2012 Cadillac CTS. The contact stated while driving at an undisclosed speed, the traction control and ABS warning lights illuminated. The contact stated the traction control was off. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacture was not notified of the failure. The approximate failure mileage was 50,000.”

   NHTSA complaint #11439097, filed 2021-11, 50,000 miles
4. 4
   Suspension

   Front subframe cracks at lower control arm mounts

   Mentioned in 5 of 60 sampled complaints

   Complaints describe cracks in the aluminum front subframe around the lower control arm mounting points and the alignment slot, with owners reporting the crack spreading until the control arm can separate. A few reports describe a loud noise followed by suspension or wheel components detaching at speed. Owners say dealers had no repair program for it at the time. Mostly reported between about 55,000 and 90,000 miles, though some are noted without mileage.

   1 related service bulletin

   What to check: Have a shop inspect the front subframe around the lower control arm mounts and alignment slots for cracks, and ask whether the alignment has needed repeated re-tightening.

   2 excerpts from owner complaints in NHTSA records

   “The Sub frame has a crack where it connects with the control arm I posted a picture in the forum group for Cadillac owners of the same vehicle and over 20 owners I’ve counted have the same crack in the same location it has unfortunately failed for some members already. …”

   NHTSA complaint #11491862, filed 2022-11

   “A combination of the lower control arm alignment adjustment bolt, it is just a slot and standard bolt. The alignment becomes loose over time and begins to work side to side in the slot, so retightening the bolt is the only solution to keep it from moving. The main issue is the subframe being made from aluminum and the machined slots for the lower arms, the ears for the lower arms are not machined or reenforced correctly which lead to severe fatigue cracks in the machined radius of the subframe. …”

   NHTSA complaint #11615171, filed 2024-09
5. 5
   Electrical system

   Driver door will not open with touch pad or lever

   • 5 complaints (8%)
   • median 55,000 mi at 4.4 yrs old (5 state mileage, few)
   • filed 2012–2019

   Owners of coupe and sedan models describe the driver door failing to open from outside or inside because the electric touch pad or lock actuator stopped working, sometimes requiring entry through the passenger side. A few say a customer service campaign to add an emergency release did not fix the problem, and dealers declined repairs outside warranty. Typically reported between about 50,000 and 61,000 miles.

   What to check: Test the driver door from both the outside handle and the inside release, and confirm the emergency release works on both doors.

   2 excerpts from owner complaints in NHTSA records

   “The driver's side door on my CTS coupe has an electrical touch pad that has ceased to function normally. Twice I have had to crawl into the vehicle from the passenger side which has not been affected. Dealership has stated that the problem is not under warranty because the mileage is in excess of 50,000 (my vehicle is at 55,690). Pain in the neck.”

   NHTSA complaint #10809470, filed 2015-12, 55,000 miles

   “Door often will not open from the inside when button is pushed to open door. If I was in a accident or there was a fire I may not be able to get out of door because it won't open. Gm has been made aware of this but refuses to do anything.”

   NHTSA complaint #11183840, filed 2019-03, 55,000 miles

Buying note. Check headlight assemblies for moisture, confirm the ignition and brake booster recalls were completed for the VIN, and have the front subframe and door releases inspected before purchase. Records showing regular brake service and any electrical repairs are worth asking for.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.