P0571 Cruise Brake Switch Circuit Fail – Audi Q7

Audi Q7 EPC warning light

Audi Q7 – P0571 Code: Cruise/Brake Switch A Circuit

DTC Code P0571 Audi is defined as Cruise/Brake Switch Circuit Malfunction

Audi Q7 Diagnostic

P0571 Cruise Brake switch Malfunction — P0571 Cruise/Brake Switch A Malfunction

P0571 Test plan Audi Q7

Measured Block Value 66 Audi — Measured Block Value 66

Measured Block Value 66 when not press Brake pedal — Press Brake pedal

Measured Block Value 66 when press Brake pedal — Not press Brake pedal

Brake light disable Relay J508

Brake Light Switch F Audi Q7 — Brake light disable Relay J508

Brake light disable Relay J508 P0571 — Brake light disable Relay J508

Brake Light Switch F Audi Q7 — Brake light disable Relay J508

Power supply at Pin 4 Brake pedal switch OK

Continue measuring …

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P0571 Cruise Brake Switch Malfunction disappears

Audi Q7 no warning light

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#Audi Q7 #EPC light #P0571

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