E39 / P0572 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Message appears in display.
Brake Light Switch Circuit, Open/Short to Ground
Fault symptom
Message appears in display.
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| The control module's input signal is low at the same time as the message from SCM shows that the pedal is depressed. |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
