This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
full bulletin at NHTSA ↗2007 Cadillac STS airbags problems
severe 15 complaints filed with NHTSA · avg repair $1,100 · see airbags across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$1,100
1crash
When does it fail?
Of the 15 airbags complaints filed for the 2007 Cadillac STS, here's the actual mileage breakdown — failures cluster heaviest at 125,000-150,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Among the 5 model years of Cadillac STS in our records for airbags problems, this one ranks #2 by owner-complaint volume.
Airbags accounts for 28% of all owner complaints filed against this vehicle, across 5 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering airbags on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This informational bulletin provides Information on Passenger Presence Sensing System (PPS or PSS) Concerns with Custom Upholstery, Accessory Seat Heaters or Other Comfort Enhancing Devices
full bulletin at NHTSA ↗This technical bulletin provides a procedure for the airbag passenger seat suppression module replacement due to the module not detecting a person due to light weight.
full bulletin at NHTSA ↗SUMMARY TO BE PROVIDED ON A FUTURE DATE.
full bulletin at NHTSA ↗CADILLAC: FRONT PASSENGER AIR BAG STATUS INDICATOR DISPLAYS OFF OR SWITCHES FROM ON TO OFF WITH PASSENGER IN SEAT (REPLACE PASSENGER PRESENCE SYSTEM (PPS) MODULE). CONDITION MAY BE CAUSED BY PASSENGER PRESENCE SYSTEM (PPS) IN RIGHT FRONT SEAT CUSHION OR IN CASE OF A SMALL PROFILE/LIGHT WEIGHT CUSTOMER, A COMBINATION OF PPS AND PASSENGER FRONT SEAT CUSHION. UPDATED 9/30/13.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2007 Cadillac STS consistently report the service air bag light coming on at startup or during driving, often intermittently. The problem centers on the passenger side air bag sensor, which fails to detect occupancy or detect it unreliably—especially when heavier passengers sit in the seat. Some owners say they have to exit and re-enter the vehicle multiple times to clear the warning. One owner confirmed at an independent shop that the passenger seat switch module needed replacement.
Dealers have quoted $600 to $1,000 to replace the sensor, and this work is not covered under warranty on these older vehicles. One owner replaced the sensor for $600 only to have the same part fail again within a year. Owners note the 2007 CTS had an identical problem and was recalled (NHTSA 10V644000) due to flexing in the passenger sensing mat causing connection breaks. Multiple owners believe the STS uses the same air bag system as the CTS and should have been included in that recall.
One documented case shows air bags failing to deploy during a 25 mph rear-end collision at 60,000 miles. Dealers have struggled to diagnose the issue even after multiple visits, sometimes reporting no faults detected while the warning light remains active.
Same Cadillac STS airbags reports on nearby years: 2005 · 2006
Failure modes owners describe
Passenger seat presence sensor malfunction / air bag warning light
Passenger side air bag sensor fails to detect occupancy or turns on intermittently. The sensor detects presence inconsistently, especially when heavier passengers sit in the seat. Warning light stays on at startup or comes on during driving.
When: Can occur early (as low as 10 miles) or develop gradually; ranges from 3,500 to 169,000 miles
Symptoms owners cite: Service air bag light on at startup; Air bag light turns on intermittently while driving; Air bag light comes on and stays on intermittently; Passenger side air bag sensor does not illuminate when occupied; Passenger air bag works intermittently with heavier passengers; Light stays on but owner must reset by exiting and re-entering vehicle
Repairs/costs cited: Wiring harness replacement ($485) followed by further diagnosis; passenger seat switch module replacement needed; passenger presence sensor replacement ($600–$1,000); dealer quoted $800–$1,000 for repair; one owner replaced sensor, same part failed again one year later
Recalls/TSBs owners mention: NHTSA Recall 10V644000 (Air Bags) applied to 2005–2007 CTS; owners report dealer said 2007 STS has no recalls despite identical system; CTS recall involved flexing of passenger sensing system mat causing kinks, bends, or folds that break connections and disable air bag
Air bag non-deployment in accident
Air bags failed to deploy during a collision. One documented crash at 25 mph with no deployment; another owner at 45 mph with passenger present experienced delayed or intermittent sensor response before potential crash.
When: At 60,000 miles (documented crash); intermittent sensor issues started as early as 26,000 miles in another vehicle
Symptoms owners cite: Air bag did not deploy in rear-end collision at 25 mph; Vehicle declared destroyed; no injuries reported
Repairs/costs cited: Vehicle towed and declared destroyed; not repaired
Recalls/TSBs owners mention: No manufacturer assistance documented; owner called manufacturer and was referred back to dealer with no resolution
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
Passenger air bag warning light - dealer will not fix for less than $800.00. Same issue as 2007 Cadillac cts. See below. This was a company car built early for employee evaluation. I am sure it was the same seat system general motors is recalling certain model year 2005-2007 Cadillac cts vehicles. Some of these vehicles have a condition in which repeated flexing of the passenger sensing…
Airbag light is on and it's comment in many
The service airbags warning appeared on my car. It was just parked for 2 days and when I got in it turned on. This is a common issue that has occurred with multiple people.
Tl*the contact owns a 2007 Cadillac sts. While driving approximately 45 MPH and when a when a passenger was in the seat the passenger side air bag light was off. The vehicle was taken to the dealer three times. Once the dealer calibrated the sensor, a second time they advised him that they could not duplicated the failure. After leaving the dealership the failure happened again. He took the…
2007 Cadillac sts. Consumer writes in regards to airbag sensor indicator light repair/cost issues. *smd the consumer was informed the air bag sensor which was causing the air bag light to illuminate was not covered and it would cost $ 850.00. *jb
Tl*the contact owns a 2007 Cadillac sts. The contact stated that the passenger side air bag works intermittently when someone of a heavier weight sits in the passenger seat. He also stated that because the air bag was not activated, the seat belt chime that indicates the seat belts were not in use, would not work either. The contact notified the dealer of the failure at least six times and…
Had airbags trouble with your 2007 Cadillac STS?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the airbags problem on the 2007 Cadillac STS?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,100.
At what mileage does the airbags typically fail?
Across the 11 complaints that reported odometer mileage, most airbags failures cluster between 56,780 and 127,000 miles, with the median around 73,400. A quarter of owners report trouble before 56,780; a quarter make it past 127,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $1,100 for airbags repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to airbags?
No active recalls currently cover airbags issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Cadillac/STS.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.