Wiring Repair Procedure

On Cabriolet and Targa vehicles, removing or installing the cable for the interior light and the passenger compartment monitoring sensor below the A-pillar is impossible with the windshield installed. In this case, cut off the passenger compartment wire harness (marked with yellow adhesive tape) before the instruments and as close to the main wire harness as possible.

When installing a new passenger compartment wire harness, cut off the wires behind the yellow adhesive tape and connect them to the vehicle's wires of the same color by soldering or crimping. Then insulate the wires thoroughly. New passenger compartment wire harness delivered by After-Sales always include lines for the passenger compartment monitoring system. Insulate these wires thoroughly if they are not used.

If the windshield has been removed or if the wire harness is installed in the A-pillar on vehicles without passenger compartment monitoring, cut off the 6-pin plug connection in the cutout for the light in the windshield frame. Then fit a flat receptacle N 17 480.5 and an insulating bushing 111.971.921 B to the brown, the brown/white and the red wire and connect these wires to the interior light. Insulate the yellow/red wire and the yellow/black wire thoroughly and tie them to the wire harness using tie-wraps.

1. Insert jumper adapter 964.610.184.00 in relay socket R 34 on the central electrical system (not for Japan and USA/Canada vehicles).
On Japan and USA/Canada vehicles, the foglight relay remains in position.
2. On Tiptronic vehicles without immobilizer, the wire (0.75 Sq. mm yellow/black) on the immobilizer relay (R 61), pin 7, must be cut off about 80 mm ahead of the relay socket. The lead from relay pin 7 must then be crimped to the lead (4 Sq. mm, yellow) from pin 3 (double connection).
3. On manual vehicles without immobilizer, jumper adapter 964.610.184.00 must be inserted in relay socket R 61 on the central electrical system.
4. On vehicles with immobilizer, the lead (0.5 Sq. mm orange/black) at connector X 4/2 pin 12 (double connection), must be cut off at the contact, insulated and tied up.
5. On vehicles without four-wheel drive, the lead (0.5 Sq. mm brown) from connector II (white) on the central informer (Pin 24) must be unclipped and insulated.
6. On vehicles with small fuel tanks (approx. 711) the lead (0.5 Sq. mm orange/black) from connector II (white) on the central informer (pin 26) must be unclipped and insulated.
7. On vehicles without sound package, radio connector II (loudspeaker lines) must be disconnected from the booster adapter (8-pin connector ahead of radio) and connected to the radio.
8. Instead of the buzzer (443.951.307 B) for the light warning, the gong relay (928.618.102.03) must be installed (already installed on vehicles for USA/Canada and Saudi Arabia).