First read and observe the introductory information
and safety warnings
Headlight adjustment
Towing a trailer can raise the front end of the vehicle enough for the dipped beam to blind other road users. Use the headlight range control to lower the light cone as required. If you do not have headlight range control, the headlights should be adjusted by a qualified workshop. Vehicles with gas discharge bulbs adjust automatically and do not require manual adjustment.
Things to note when driving with a trailer
Pulling off on slopes when towing a trailer
Depending on the steepness of the slope and the total weight of the trailer and vehicle, a parked vehicle towing a trailer can roll back a short distance when pulling away on a hill.
When towing a trailer, pull off on slopes as follows:
once to switch off the electronic
parking brake .
button and hold it in this position
to hold the vehicle and trailer with the electronic parking brake.
button when the engine
has sufficient power to move off. 
WARNING
Loading the trailer
Trailer stabilisationChecking auxiliary air heater element - Z35- with auxiliary air heater
control unit - J604-, RHD vehicles
Checking
Special tools and workshop equipment
required
Vehicle diagnostic tester with current probe 100 A -VAS
5051B/7-
Test conditions
Intake temperature less th ...
Removing and installing headlight dipped beam bulb (dual halogen headlights)
Note
Left headlight dipped beam bulb -M29- and right headlight
dipped beam bulb -M31- are only fitted on dual halogen
headlights.
Removal and installation are described for the left side.
Removal and installati ...
Removing and installing holder for heater and air conditioning unit
Note
Leave the holders in the vehicle on removing the heater and
air conditioning unit. The illustration shows a left-hand drive
vehicle.
Removing
–
Re ...