AH31.10-P-1000-02T Notes on Installing A Trailer Coupling

AH31.10-P-1000-02T Notes On Installing A Trailer Coupling
- 211.0##/0## (except 211.076/077) 1#







Always remind the customer that Fuse 18 in the SAM control unit with the rear SAM fuse and relay module (N10/2) should be inserted in its socket only when a trailer is actually connected - otherwise another electrical device could discharge the battery while the vehicle parked.







The cable must be hung in the operating lever before the transport lock between the crossmember and swivel ball neck is removed. Otherwise the system locks and cannot be unlocked.

The ball neck snaps into its two end positions and can only be operated using the cable at the release lever.

As part of liberalization of EU regulations (EC type approval) the legislator renounces acceptance at an authorized technical inspection station when a trailer hitch is retrofitted.

Prerequisites:
^ That the supplement "If installed at the plant" is entered in the vehicle documents (in number 33 to number 27: E1 00...)
^ That a E1 test symbol is fastened to the trailer hitch

For older vehicles or trailer hitches with national test symbol (no E1 test symbol) the installation check at an authorized technical inspection station continues to apply.

In export countries the respective licensing provisions or legal requirements for the installation of a trailer hitch must be observed.

The body sealant and underfloor protection must be removed from all the body mounting points of the trailer hitch. The mounting points should then be cleaned with a commercially available cleaning agent. Apply anticorrosion paint to bare-metal areas of the body.

Trailer couplings are homologated safety parts. Their installation on the vehicle is to be carried out exclusively by trained, professional technicians. Trailer couplings, which are damaged because of an accident, bottoming or being run into from behind, must be replaced; subsequent alterations such as bending, mechanically processing, and welding are not permitted.

The coupling ball must have a minimum diameter of 49 mm at all points, measured using a caliper gauge. The ball must be greased before use to reduce wear. Advise the customer accordingly.

On trailers with an anti-swerve device it is not necessary to grease the ball (refer to trailer instructions). Advise the customer accordingly.

Advise the customer to read the "Trailer coupling" and "Towing a trailer" sections in the vehicle owner's manual.

On some models the electric fan must be replaced with a more powerful electric fan.
Failure to retrofit this component will render the warranty/goodwill warranty invalid.







Check that the reinforcements are installed in the trunk on the left (6) and right (7). If not, the reinforcements must be retrofitted.
In the event that the above-mentioned components are not retrofitted, this will render the warranty/goodwill null and void