Only for vehicles with Trailer Package
 
Installation uses original vehicle connectors and a multifunctional trailer module. Compatible with both conventional bulb and LED trailer lamps.
The Trailer Lamps are controlled from the vehicle and the driver will be informed if trailer turn indicator, trailer tail or trailer brake lamps are malfunctioning – additionally there is an audible warning in case of trailer turn indicator or brake light malfunction.
Available with a 13-pole waterproof socket housing.
Adapter is available to temporarily change 13-pole vehicle to 7-pole trailer/caravan adapter): E919999137

Please consult your dealer for all functions of these products and for the maximum towing load capacity for your vehicle.
Reference picture.