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 stabilisationRemoving and installing valve stem seals (cylinder head removed)
Special tools and workshop equipment
required
Removal and installation device for valve cotters -VAS
5161A- with guide plate -VAS 5161A/32-32-.
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Anti-corrosion treatment
Caution
Missing anti-corrosion treatment results in damage
to the onboard supply.
Note
All threaded connections must be tightened to specified
torque.
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Spraying the evaporator with the suction feed spray-gun -V.A.G 1538- and
spray lance
Spray the evaporator with Contra Sept directly using a spray
lance (approx. 10 bar). Contra Sept neutralises microbes and
bacteria directly at the evaporator.
In order to enable access to the evaporator, some
preliminary work and differe ...