Brake Electric Vacuum Pump, Removing And Installing, Except RS 5: Notes
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The construction of the vacuum pump V192 depends on the engine.
The Brake System Vacuum Pump -V192- is switched on by the engine control module depending on the intake manifold pressure.
The vacuum pump is not intended to be serviced. In case of complains, determine the cause with the help of a function or leak test. If there is a malfunction, replace the electric vacuum pump.