Removing and installing engine control unit -J623- (with protective housing)Safety precautions for working on vehicles with auxiliary/supplementary
heater
Danger of fire and explosion from auxiliary/supplementary heater
In fire and explosion-endangered areas a spark or the high
temperature of the auxiliary/supplementary heater can cause a fire or an
explosion. Burn injuries are also possible.
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Incorporation of high-voltage heater (PTC) - Z115- into coolant circuit
Note
In vehicles with a high-voltage system, the high-voltage
heater (PTC) -Z115- is used as a supplementary heater.
In vehicles with a high-voltage system and an auxiliary
heater installed as optional equipment, the ...
Removing and installing activated charcoal filter
Removing
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Observe safety instructions
→ Chapter.
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Observe rules for cleanliness
→ Chapter.
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Remove rear right wheel
→& ...