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After reading your Wiki page (link here) on this topic, I thought it might be worth including an additional note about a couple of other possible causes for the Light/Rain sensor failure. These are not actually about (G397) sensor itself, but can cause issues for the sensor that would trigger a...

Pretty simple test set up to determine whether or not the Hall switch is working properly. There's obviously a magnet inside the Hall Sensor as the package included several rivets and a steel washer which was "stuck" to the sensor. Using a 9V battery for power, I'm reading across the 1KOhm...

As the title states, the question is if it's possible to change the volume of the alarm siren. Looking at Control Module 46-Central Conv., then Adaptations-10 we find there's an option for Alarm Horn Adjustment. Before I mess around with this, is this option used to increase and/or decrease...

For anyone who is experiencing problems with the operation of the convertible roof, but not getting any fault codes in Address 26 - Auto Roof, it's possible one of the Hall Sensors is defective. Although it won't throw a fault code, a defective Hall Sensor can be identified using the Measurement...

As the title states, how does one go about testing a 2-wire hall sensor. 01091 - Convertible Top Front Switch (F202) 01092 - Convertible Top Stowed Switch (F171) This is a Hall Sensor located in the left main bearing of the convertible top frame. I know this can be done with the VCDS using...

Anyone...? Anyone...?

Okay, good to know! Thanks. :-)

I will check with the user and see if it's not connecting at all, or if it's just not connecting with the ECU.

G'morning! One of our Forum members has run into a problem as stated below - "I have TT Mk2. The car won't start, everything lights up on dash, brake, wiper, epc, steering, and other things. One thing I notice that the engine light doesn't show up. When I plug the VCDS into the OBD port it...

According to the Workshop Manual Suspension, Wheels & Steering - D3E80075730 for the Audi TT (8J) there are several cases where suspension reprogramming is required - (1) "If the Electronic Damping Control Module -J250- is replaced, the control position must be reprogrammed." (2) "On vehicles...

Fair point. :) I was hoping these Swedish VW shops might know in the event tourists are going there and getting it done. Sort of like how VW dealerships in France provide headlight adjustments using the the Tourist Solution for RHD cars coming over from the UK. As you said, it's unlikely the...

Without taking anything away from this discussion, you might want to ask over in the Audi TT Forum UK as well. Lots of history there with the Mk1, so there may be someone with actual experience with this problem that can also help. https://www.ttforum.co.uk/forums/tt-forum-mk1-tt-8n.2/

I have written to a couple of VW repair shops in Sweden, in hopes they can provide a more simple solution. Hopefully they know a work around with VCDS and I can avoid a trip to the local VW shop, who, as you said, probably won't know how to set it up anyway. Maybe nothing will come if, but...

umm...yeah..... :D

So this is not possible with VDCS...? Nothing in the Adaptations...? Guess this will be a VW Service trip for ODIS setting. :(

As the title says, my question is how to get the tail lights to come on with the front DRLs. I have this setting on my 2007 Audi (8J) TT which is really quite simple. Address 09-Central Electronics -->Byte 0 --> Bit 3: Daytime Running Lights (Scandinavia) active. However I can't find a...

Thanks! It will be interesting to see if vacuum measurement is possible, or what values are used.

Are there any specific measurement blocks determine if the vacuum pump is working properly? Specifically to determine vacuum pressure (in/Hg.). I'm not looking for a vacuum leak in one of the hoses, but to determine if the pump itself is losing the ability to pull vacuum. Obviously knowing the...

If you need help with other issues specific your Mk3 TT Roadster, stop by the Audi TT UK Forum and we might be able to help.

This topic recently came up in the Audi TT Forum UK for the 3.2 VR6 BUB/CBRA engines so I thought I would share our findings since can affect other VAG engines as well. While problems with the SAI system are usually attributed to one of the major components (e.g. air pump, Combi-valve...