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Just to let you all know, you were right. I needed a different diagnostic tool to recalibrate the steering angle sensor. I ended up using an autel system which I can reccomend thoroughly! Many thanks.
Pins 3 and 7, yeah I did. I can communicate with all the other modules just fine.
Im not sure what you mean by reactivate, Iv never seen a module needing 'activated', only coding. But i cant communicate with the module anyway, not even to perform a calibration which i thought should of been possible in VCDS for sure considering its a VW part. But if you have experience that says VCDS specifically cant do it on this vehicle i will seek to find someone with PIWIS.
Hi, Thanks for the reply. What makes you say that? Will it do something specific that VCDS wont? Thanks.
Hi All, I'm asking on the odd chance someone may be able to help with my strange fault. 2003 4.5 Turbo Original fault was no comms to loads of different modules, air suspension, gearbox, front diff etc. The sunroof drains were blocked, water ingress in the carpet which coupled with a tiny hole in some insulation on an Ignition relay terminal 15 feed made that it wasn't powering up. That is now fixed and I'm stuck with one fault. No modules can communicate with the steering angle sensor, it immediately returns a defective status when cleared in the abs/stability control modules. The sensor is driven directly from the steering wheel control module, which I can communicate to. But it passes a separate 'drive' can link through to the sensor where the steering module is on the 'comfort' can bus. The steering wheel control module has its terminal 30,31 and 15 voltages as it should. The drive can bus resistance checks back to all the other modules (I don't have a scope handy to check the integrity of the bus but i presume its OK as the rest of the modules seem to communicate OK) The sensor and steering wheel control module have both been swapped with known good units. Fault remains. I tried the Porsche specified calibration procedure with no luck, I don't have access to PIWIS but i am communicating with the car using VCDS as its essentially a 7L Touareg Does anyone have any ideas? Thanks in advance.