Table 1 shows three common service brakes related problems of the 2009 Cadillac STS.
| Problem Category | Number of Problems |
|---|---|
| Brake Fluid Leak problems | |
| Service Brakes problems | |
| Brake Abs Warning Light problems |
2009 Cadillac Sts lost all or most brake fluid. This car has slightly over 22000 miles. Multiple warnings on panel. Dealer found that the left rearf brake caliper was leaking fluid under pressure at the point where the brake hose connects. Caliper and hose were replaced under warranty. My concern now is that if this is a widespread problem it may cause accidents when all brakes fail with no fluid left in the master cylinder reservoir. That is a very dangerous situation and, hopefully, it is a problem that is not widespread.
Vehicle detects fault and displays message to service stability control system. Specific problem not yet diagnosed. Within a few moments, the display states that engine power is reduced. This causes a very unsafe condition as the vehicle slows to 10-15 mph. Pressing gas pedal causes transmission to downshift to lower gear slowing vehicle further. Cannot safely maneuver in traffic, brakes require much higher pedal pressure due to low vacuum boost after engine power reduced. Insufficient warning that this is happening. Problem is not with engine or powertrain, but engine power is cut (engine runs very rough as a result) in response to detected stability system error. Engine runs fine if turned off and restarted. No overheating, oil level is fine, gasoline is good, no external problems. After restarting car drives fine initially, event recurs within 1 mile. Very difficult to try to justify this kind of intentional vehicle control behavior. Extremely poor design that causes an unsafe condition when a stability system error is detected.
Tl- the contact owns a 2009 Cadillac Sts. The contact stated while driving 15 mph, when the abs warning light was illuminated. The contact stated when she depressed the brake pedal and it continued moving forward. The contact crashed the front driver side on the vehicle into a ditch. . The air bags did not deploy. The contact stated no on was injuries nor in need of medical attention. No police report was filed. The vehicle was not driveable. The vehicle was towed to local dealer rimrock GMC Cadillac located at 840 shiloh rd, billings, mt 59106, (406) 651-5000, where it was diagnosed with needing service the traction control. The vehicle was repaired. The manufacturer has not been informed of failure. The failure mileage was 70,000. Dp.