Persistent Brake Proportioning Warning at High RPMs on Cayenne 957
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Persistent Brake Proportioning Warning at High RPMs on Cayenne 957
Hello everyone, I’m facing a recurring issue with my Porsche Cayenne 957 where the brake proportioning warning, along with the ABS and PSM lights also the red “brake”, activate when the engine exceeds 2800 RPM. We’ve conducted extensive checks and repairs including rewiring under the carpet and replacing the brake pads. We also disconnected the battery, which temporarily resolved the issue for a few hours but the problem returned. Has anyone encountered similar issues or does anyone have insights into what might be causing these symptoms to trigger specifically at higher engine speeds? Any advice or shared experiences would be greatly appreciated. Thank you!