Checking vacuum generation
Note
The average air pressure of the earth's atmosphere at sea
level is 1013 mbar and decreases steeply as the altitude
increases (approx. 100 mbar/1,000 m altitude). Local and time
fluctuations also influence vacuum generation.
...
Indicator lamps
First read and observe the introductory information
and safety warnings
Lit up
Possible cause
Solution
The vehicle is being held by the electronic parking
brake.
Switch off the Auto Hold function if necessary .
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Removing and installing gas discharge bulb control unit -J343-/-J344-
WARNING
Risk of death due to high voltage! Risk of injury
and environmental pollution!
Observe operation and safety notes for gas discharge
bulbs
→ Chapte ...