Touareg: Still looking
Join Date: Jan 2004
Second Vehicle: Still looking
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All Models - Tip for Replacing a Control Module
If any vehicle control module is replaced for any concern, it is recommended to code that module according to guided fault finding before testing if the repair was successful. For example, if a door module was replaced for a battery drain, then that module must be coded before retest of the system. It is also recommended to recode the gateway module when another module is replaced to reset the communication system. Even if the coding seems to be correct, entering the code anew will force a reset of the system.
All Models - Battery discharged, Low voltage faults, Instrument cluster display shows low voltage.
During a Battery/Charging system check, the MCR-340 may indicate the system has a low charging voltage problem.
Before replacing any parts, it is important a complete voltage drop test of the battery cables and fasteners be performed. A poorly connected or loose positive/negative cable connection or chassis attachment can cause the generator to not charge properly. The engine/transmission assembly MUST be properly grounded through the chassis for the generator to function properly.
1) Test Requirements:
·Make sure the battery is fully charged
·Voltage drop should be no more than 0.2 volts per connection
·Voltage drop should be performed with engine running and electrical system loaded(Lights,wipers,blower,etc.)
·Use a Fluke 87 or equivalent voltmeter
2) To measure a “positive cable” voltage drop:
Connect voltmeter between B+ Positive post and Generator B+ output post.
3) To measure a “negative cable” voltage drop:
Connect voltmeter between Negative battery post and alligator clamp on generator case.
4) Inspect all cable connections including:
·Positive connection at generator B+ post to fuse block connections, fuse block connection to B+ battery post
·Ground circuit - Engine/Trans assembly to Chassis and Chassis to negative battery post
2004-2007 Touareg - “Key Symbol” Displayed After Access/Start Module Replacement
May 23, 2008 – REMOVED - Refer to TB 57-08-04 (2017104).
Touareg Audio Accessories - Keyless Start - Paddle Shift ==>
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