Subject: Trailer Lights Inoperative, Update Programming (Flashing) Trailer Control Module
Model(s): 2004 Volkswagen Touareg with Trailer Towing Accessory Package
Condition
Trailer Lights are inoperative. May require Trailer Control Module (J345) “Update - Programming” to increase electrical capabilities from 4 amps / 50 watts to 8.3 amps / 100 watts to accommodate trailers with large electrical draw.
Service
Tool requirements
- VAS 5051 or 5052 (with Basis CD V.06.05 and the Brand CD V.06.48 or higher) with old diagnosis logs erased prior to start.
- “Update - Programming” (flashing) CD W42TOUAREGTHCD.
- VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure.
- VAS 5052: connected to vehicle with battery voltage requirements met. Download File PDF
 Trailer Control Module){kind=link}
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