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Module LocationEdit

1992 → 1995 Edit

There are 2 possible modules located under the dash above the glove box. One is a smallish silver box towards the left (driver's side) that appears to have no writing on the top (hard to see). The other is a larger black box towards the passenger's side with lots of writing on top - EAP 191 959 875 made in Germany 12V etc. The part number of the cruise control module is SGA-004-397-01. It is the small silver one.

1997 → 2001 Edit

The Cruise Control Module is located under the right side passenger AC vent. Photos in this article illustrate the 1997 → 2001 configuration. 

PryLouvres

The louvers for the vent can be pryed out by lifting the outboard side first. It might be better to design a tool to reach into the louver and lift both sides out evenly.

VentScrew

A single screw and two tabs secure the vent. This is a number 2 phillips.

VentTabs

Two tabs at the top of the vent have to be pried down.

VentDuct

The final length of plastic vent duct must be removed.

Cruise Control Module

Cruise Control Module in situ.

Passenger Air Duct

Disassembled.

ModuleScrew

Two screws secure the Cruise Control Module. Use a number 3 phillips bit.

Module Tool
SocketExtension

Reinstalling the vent duct requires pressing it over another section of duct. Put a rod, like a socket extension, across the throat of the duct, reach under the dash to grab the earlier section of duct, and push it on.

VW Cruise Control Module sss

Cut out left mounting hole to make for an easier install, allowing you to start the left screw and then slipping the module tab under the started screw.

Module ReliabilityEdit

There are many components in the Cruise Control system, any of which can fail. The reliability of the Cruise Control Module, however, appears to be rather low. As such, in the absence of exhaustive testing, a rational first step in approaching a cruise control problem would be to have the Module repaired or replaced, and if that doesn't address the problem, proceed accordingly. This [vwforum thread] describes the experience of one individual who pulled several Modules from cars in salvage yards and found that virtually 100% of them had failed. Another posting within that thread goes into detail about how to test a module.

Module RemovalEdit

Follow the directions in the captions of the photographs in this article to access and remove the Cruise Control Module.

Module Repair or ReplacementEdit

There are at least three options for dealing with a malfunctioning module.

  1. Purchase a replacement module. This can be very expensive.
  2. Send your module to a re-builder. [Module Master] in Idaho is one such re-builder. Module Master replaces all the old solder with stronger solder and replaces weak components. There are also re-builders on EBay.
  3. Open the module and repair the solder joints yourself.

This [audiworld forum thread] illustrates the contacts to re-solder inside the module if you want to try it yourself. Others have found they ultimately had to re-solder every joint.

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