Fig. 131 The front left of the bumper: connection for engine preheating ②
In engine preheating mode, the engine coolant is heated slowly using a heating element while the vehicle is stationary. To do so, the cables supplied with the vehicle must be connected to a 230-volt socket or a 115-volt socket, e.g. in a garage. The engine will reach its operating temperature much more quickly if the vehicle is switched on when the coolant has been preheated. This reduces fuel consumption and exhaust emissions during the warm-up phase.
Preheating the engine can take up to 3 hours depending on the outside temperature .
Connecting the engine preheating system
WARNING
WARNING
It is sufficient to test the residual current circuit breaker once a month if the engine preheating system is only used occasionally. If it is used regularly, have it checked once a week.
Masking areas, rear body
Masking areas, rear underbody
A -
No sealant on threads or contact surfaces.
B -
Threads waxed
D -
Threads free of surfacer and top-coat paint (joint surface may be
painted)
E -
...
Assembly overview - toothed belt, engine codes CPTA, CHPA, CZEA, CZDA
1 -
Toothed belt
Before removing, mark direction of rotation with chalk or
felt-tipped marker pen.
Check for wear
Removing
→ Chapter
Installing (adjusting valve timing), CPTA, CZEA
& ...
Cleaning Cameras and Sensors
To ensure the various Autopilot components can provide
information that is as accurate as possible, keep them
clean and free of obstructions, condensation, or damage
(see Cleaning).
Condensation can form inside the camera enclosures,
especially if you park your vehicle outside in cold or wet
c ...