Table 1 shows three common service brakes related problems of the 2014 Subaru Impreza Wrx.
| Problem Category | Number of Problems |
|---|---|
| Service Brakes problems | |
| Brakes Failed problems | |
| Brake Drum Wheel Cylinder problems |
In *extremely* cold weather - below of - the vehicle will start successfully however the stability/traction control, anti-lock brakes, and "hill-assist" (part of the abs system) trouble indicator lights will light and stay lit. Based on the instruction manual if this occurs, I should cycle the ignition to see if the code clears. This is an unacceptable solution because the car's battery is already extremely stressed due to the cold temperature and may not restart the vehicle. However, on one occurrence I did cycle the ignition and the problem remained. While I recognize that a more vicious brake fluid is needed in a performance vehicle of this type, if the abs pump's orifices were larger this issue might not occur. The other possibility is the brake fluid used during assembly is already supersaturated with moisture and the cold temps allowed the suspended water to fall out of suspension and freeze in the hydraulic lines. Vehicle was safe to drive, the brake's mechanical action was unaffected by the fault. The brake and clutch pedals (which I believe to use the same fluid) it did feel like I was pushing through mud. I did confirm the abs was not functional.
The contact owns a 2014 Subaru wrx. The contact stated that while driving in stop and go traffic, the brakes failed to respond. The vehicle was taken to a independent mechanic, who repaired the vehicle. The contact was unaware of the exact repairs made to the vehicle. The manufacturer was contacted about the failure. The approximate failure mileage was unknown.
While depressing the clutch or brake pedal in the vehicle I see excessive flex at the firewall and noticeable movement of break and clutch cylinders. My spot welds do not appear broken at this time however they are likely to fatigue and break. This appears to be a major defect which is a safety concern as it affects breaking and shifting. Subaru should be held accountable and correct the problem.