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2011 Cadillac STS Owner Complaints

Updated May 30, 2026
Ryan Davis
2011 Cadillac STS Owner Complaints

Complaint Summary

The 2011 Cadillac STS has 9 reported complaints.

  • Top issues involve electrical system and service brakes.

Reliability Score

Reliability Score

8.5/ 10

Based on 9 complaints

Most Frequent Issues

ELECTRICAL SYSTEM

3 33.3%

SERVICE BRAKES

2 22.2%

SEAT BELTS

1 11.1%

EXTERIOR LIGHTING

1 11.1%

VEHICLE SPEED CONTROL:CRUISE CONTROL

1 11.1%

Quick Insights

  • The top category is ELECTRICAL SYSTEM, accounting for 33.3% of all complaints.

  • Owners have reported issues across 6 distinct vehicle systems.

  • Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.

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Complaint Summary

What owners keep reporting on the 2011 Cadillac STS

The 2011 Cadillac STS has 9 owner complaints in this dataset. ELECTRICAL SYSTEM is the most common complaint category, representing about 33% of the reports shown here.

Most common complaint categories

The top complaint groups for the 2011 Cadillac STS are ELECTRICAL SYSTEM (3), SERVICE BRAKES (2), SEAT BELTS (1).

Are these complaints a serious red flag?

Potentially. 6 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.

What should buyers inspect on a used 2011 Cadillac STS?

Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.

Read the full buyer guideRecall report and remedy notesMaintenance costs and intervals

Detailed Complaint Log

Showing 6 of 6 systems

ELECTRICAL SYSTEM

3 Reports33% of total

Previewing the first 2 complaint summaries.

DASH LIGHTS FAIL TO COME UP UPON START - SPORADIC IN MARCH 2013, CHRONIC IN NOVEMBER TO PRESENT BACK UP SENSORS MALFUNCTIONING - JANUARY 2014 TO PRESENT POWER WINDOWS GO UP AND DOWN - SPORADIC JAN 2014 CD/RADIO VOLUME EXCEPTIONALLY HIGH AND THEN RE-ADJUSTS ITSELF HEADLIGHTS TURN OFF WHEN THEY SHOULD BE ON - 2 OCCURRENCES - FEBRUARY 2014 2 EMISSION WARNING FROM ONSTAR DENIED BY DEALER - JAN - 03/2014 ALARM COMING THROUGH REAR-VIEW MIRROR ASSEMBLY - VERY, VERY LOUD AND PERSISTENT - FEBRUARY 2014 I REPORTED SEVERAL OCCURRENCES IN 2013. DEALERSHIP SAID THEY COULD NOT DUPLICATE REPORTED CHRONIC OCCURRENCES AGAIN IN NOVEMBER, DECEMBER AND JANUARY AND FEBRUARY - TOLD COULD NOT DIAGNOSE COMPLAINED TO CORPORATE WHO OFFERED TO HAVE CAR DIAGNOSED FOR 99.00; THEN CHARGED ASSIGNED WERE 99.00 PER SYMPTOM - GREAT WAY TO DETER A CUSTOMER TOLD BY CORPORATE THIS PAST WEEK THAT THEY DID NOT SAY THAT AND THAT THE CAR WAS UNFIXABLE. ALSO TOLD I WAS OUT OF WARRANTY AND ANY CHARGES WERE NOW ON ME. CAN'T FIX SOMETHING NO ONE CAN/WILL ACKNOWLEDGE EXISTS IF CONSUMER DOESN'T HAVE THE MONEY TO PURSUE THE MATTER. REFUSAL TO OFFER ANY OTHER SUPPORT FROM CORPORATE. I HAVE SENT IN 3 LETTERS TO CORPORATE. *TR

3/17/2014

TL* THE CONTACT OWNS A 2011 CADILLAC STS. WHILE DRIVING AT 40 MPH, ALL THE INSTRUMENT PANEL LIGHTS FAILED TO ILLUMINATE, THE NAVIGATION SYSTEM FAILED TO FUNCTION, AND THE BACK UP SENSORS CHIMED WITHOUT ANY OBJECT BEHIND THE VEHICLE. IN ADDITION, THE VEHICLE STALLED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TOWED TO A DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSE OR REPAIR THE VEHICLE. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 20,000. THE VIN WAS UNAVAILABLE. UPDATED 7/29/15*CN UPDATED 10/17/2017*CN

5/21/2015

1 more complaint is available in this category.

SERVICE BRAKES

2 Reports22% of total

Previewing the first 2 complaint summaries.

WHEN I BACKED OUT OF MY CARPORT AND APPLIED MY BRAKES IT WOULDN'T STOP. I TOOK IT TO THE DEALERSHIP AND THEY COULDN'T MAKE THE CAR DO IT AGAIN. THE BRAKES WHEN I BACK UP STILL DOES NOT STOP MY CAR INTERMITTENTLY, UNTIL I STEP ON BRAKES 3 OR 4 TIMES. THIS IS FRIGHTENING. THE DEALERSHIP WOULDN'T EVEN TAKE A LOOK AT MY BRAKES. *TR

8/23/2014

WE OWN A 2011 CADILLAC STS. RECENTLY MY WIFE WAS LEAVING FOR WORK AND ALL OF A SUDDEN I FELT THE HOUSE SHAKE. MY WIFE WAS REVERSING OUT OF THE DRIVEWAY WHEN SHE APPLIED THE BRAKES. THE PEDAL WAS SO HARD SHE COULD NOT PRESS THE PEDAL DOWN. TO AVOID A CRASH SHE PUT THE CAR INTO DRIVE TO KEEP IT FROM GOING INTO THE STREET. ONCE SHE WAS ABLE TO KEEP THE VEHICLE OUT OF THE STREET SHE PUT THE CAR IN NEUTRAL, BUT THE BRAKES WERE STILL NOT RESPONDING. THATS WHEN OUR HOME BECAME OUR CAR STOPPER. I DROVE THE CAR AFTERWARDS AND THE BRAKE PEDAL WAS STILL HARD AND WOULD NOT HOLD THE CAR FROM MOVING WHEN IT WAS PUT INTO GEAR. I CONTACTED THE LOCAL DEALERSHIP WHO INFORMED ME THAT IT WOULD TAKE AT LEAST 3 TO 4 HOURS LABOR TO DIAGNOSE THE PROBLEM. THAT AT $149.99 PER HOUR. HE ALSO INFORMED ME THAT THEY HAD A VEHICLE IN EARLIER SAYING THE SAME THING AND THEY PRETTY MUCH REPLACED ALL OF THE BRAKING SYSTEM ON THE CAR AT THE COST OF OVER $3900.00. THAT IS CRAZY TO ME SO I WENT THROUGH THE CAR MYSELF. I REPLACED ALL BRAKES AND ROTORS, REPLACED THE BRAKE FLUID AND BLEED THE WHOLE BRAKE SYSTEM. ALL THAT FOR THE NEXT DAY THE SAME THING HAPPENED. I HAVE SINCE TRACED THE ELECTRICAL SIDE AND HAVE FOUND THAT THE VACUUM BRAKE ASSIST FUSE UNDER THE HOOD WAS BLOWN. I HAVE REPLACED THE FUSE BUT AS SOON AS YOU HIT THE BRAKE IT BLOWS THE FUSE AGAIN.

10/4/2016

SEAT BELTS

1 Report11% of total

Previewing the first 1 complaint summaries.

TL* THE CONTACT OWNS A 2011 CADILLAC CTS. WHILE TRAVELING APPROXIMATELY 48 MPH, THE DRIVER CRASHED INTO THE FRONT PASSENGER'S SIDE OF ANOTHER VEHICLE. THE FRONT PASSENGER SEAT BELT AND SHOULDER ATTACHMENT DEVICE SEPARATED WHICH CAUSED THE OCCUPANT TO MOVE FORWARD INTO THE DEPLOYED AIR BAG. THE PASSENGER SUSTAINED A BROKEN RIGHT ANKLE. THE VEHICLE WAS COMPLETELY DAMAGED AND TOWED TO A SAVAGE FACILITY. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE FAILURE MILEAGE WAS UNAVAILABLE. ...UPDATED 01/23/13 *BF....UPDATED 01/30/13 *BF AN INVESTIGATOR WITH THE CALIFORNIA HIGHWAY PATROL SUBMITTED THIS COMPLAINT FORM, NOT THE OWNER OF THE VEHICLE. UPDATED 2/4/2013 *JS UPDATED 2/7/2013 *JS

1/11/2013

EXTERIOR LIGHTING

1 Report11% of total

Previewing the first 1 complaint summaries.

DASH LIGHTS FAIL TO COME UP UPON START - SPORADIC IN MARCH 2013, CHRONIC IN NOVEMBER TO PRESENT BACK UP SENSORS MALFUNCTIONING - JANUARY 2014 TO PRESENT POWER WINDOWS GO UP AND DOWN - SPORADIC JAN 2014 CD/RADIO VOLUME EXCEPTIONALLY HIGH AND THEN RE-ADJUSTS ITSELF HEADLIGHTS TURN OFF WHEN THEY SHOULD BE ON - 2 OCCURRENCES - FEBRUARY 2014 2 EMISSION WARNING FROM ONSTAR DENIED BY DEALER - JAN - 03/2014 ALARM COMING THROUGH REAR-VIEW MIRROR ASSEMBLY - VERY, VERY LOUD AND PERSISTENT - FEBRUARY 2014 I REPORTED SEVERAL OCCURRENCES IN 2013. DEALERSHIP SAID THEY COULD NOT DUPLICATE REPORTED CHRONIC OCCURRENCES AGAIN IN NOVEMBER, DECEMBER AND JANUARY AND FEBRUARY - TOLD COULD NOT DIAGNOSE COMPLAINED TO CORPORATE WHO OFFERED TO HAVE CAR DIAGNOSED FOR 99.00; THEN CHARGED ASSIGNED WERE 99.00 PER SYMPTOM - GREAT WAY TO DETER A CUSTOMER TOLD BY CORPORATE THIS PAST WEEK THAT THEY DID NOT SAY THAT AND THAT THE CAR WAS UNFIXABLE. ALSO TOLD I WAS OUT OF WARRANTY AND ANY CHARGES WERE NOW ON ME. CAN'T FIX SOMETHING NO ONE CAN/WILL ACKNOWLEDGE EXISTS IF CONSUMER DOESN'T HAVE THE MONEY TO PURSUE THE MATTER. REFUSAL TO OFFER ANY OTHER SUPPORT FROM CORPORATE. I HAVE SENT IN 3 LETTERS TO CORPORATE. *TR

3/17/2014

VEHICLE SPEED CONTROL:CRUISE CONTROL

1 Report11% of total

Previewing the first 1 complaint summaries.

2011 CADILLAC STS. CONSUMER WRITES IN REGARDS TO CRUISE CONTROL ACTIVATED ON ITS OWN. *SMD UPDATED 09/17/15*LJ UPDATED 09/21/15.*JB UPDATED 09/22/15*JB

8/3/2015

STEERING

1 Report11% of total

Previewing the first 1 complaint summaries.

The steering wheel became uncontrollable while idle and can't turn the steering wheel without picking up speed. While stopped you can't turn the steering wheel, it's like trying to turn it while the engine is off.

1/4/2025

About This Data

Data and Methodology

MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

FAQ

What are the most common owner complaints for the 2011 Cadillac STS?

The most reported complaint category for the 2011 Cadillac STS is ELECTRICAL SYSTEM, with 3 owner reports. That is about 33% of all complaints logged here. Other recurring themes include ELECTRICAL SYSTEM, SERVICE BRAKES, SEAT BELTS.

Are complaints about the 2011 Cadillac STS a serious warning sign?

Potentially. 6 complaint reports fall into higher-attention systems such as brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components. That does not prove every vehicle has a defect, but repeated complaints in those systems justify a more careful pre-purchase inspection.

How should buyers use complaint data for the 2011 Cadillac STS?

Use complaints as an early pattern to investigate, not a standalone verdict. Start with the top complaint categories, compare those themes against the recall report and maintenance guide, then inspect service records for evidence that the same problem areas were already addressed. If the same issue appears repeatedly across complaints and recalls, treat it as a real ownership-risk flag.

Are complaints about the 2011 Cadillac STS severe?

6 complaint reports involve higher-attention systems such as brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection before purchase.

Complaint list entries are sourced from owner-submitted NHTSA ODI records.

Read complaint summaries

Cadillac STS: How should complaint data influence buying decisions?

Use complaint patterns together with recalls and maintenance guidance to estimate ownership risk and inspection priorities.

Carfocal links complaint data directly to recall and maintenance routes for the same model year.

Return to full vehicle report
Complaint entries
9
Top-topic view
5 grouped topics shown
Primary source
NHTSA ODI owner complaint records

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In this guide

  1. 01Overview
  2. 02Common Problems
  3. 03Owner Complaints
  4. 04Data and Methodology

Start here

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