Braking and stability control
PSM relies on wheel-speed, steering-angle and brake-pressure information. A warning can originate from a wheel-speed sensor, hub encoder, wiring, voltage supply or mechanical brake issue.
How a technician distinguishes possible causes
Read the PSM controller, compare wheel speeds, inspect brake wear and hydraulic condition, and check sensor circuits. For track-driven cars, assess rotor condition, pad compound, fluid and heat exposure separately from ordinary road maintenance.
Repair and post-repair verification
Verify brake function and warning-free operation after repair, including required calibrations.
This guide addresses a Porsche Panamera in the researched 2016 application (Panamera 970). The correct repair depends on the exact engine, equipment, transmission and production year.
Symptoms an owner may notice
Calibration Not Completed warning after rear pad and parking-brake shoe replacement.
Parking-brake warning and inoperative condition after brake service.
How the problem is investigated
The source-case diagnostic approach included Set and verify parking-brake shoe air gap.
Observed case findings included Air gap set to specification before calibration. Those observations are not automatically applicable to a different vehicle.
What the research cases found
Documented root causes included Parking-brake shoe air gap/calibration not completed after service. Other faults can create similar symptoms, so diagnosis must be confirmed on the actual vehicle.
Reported successful actions in the research included Adjust parking-brake shoe air gap and run scan-tool calibration. These are research case outcomes, not claims that Mich’s performed the repairs.
For Porsche Panamera diagnostics in Hickory, NC, call Mich’s Foreign Cars at 828-324-6012 with your model year, engine, warning messages and symptom history.