- Joined
- Sep 26, 2021
- Messages
- 41
- Reaction score
- 11
- Location
- Portland, OR, USA
- VCDS Serial number
- C?ID=319469
My US 2004 Jetta TDI has been converted to 4Motion. During the project, we also installed an R32 steering rack. I did a ton of research in advance, so I am 99% confident all of the parts we installed are compatible. However, we are having issues with the R32 ABS module we installed. I should mentioned right up front that it was a used module. I should also mention that this post won't have a VCDS log, but I will be able to provide one in a followup post. I am coordinating with my mechanic but we're in different cities. He should be sending me a VCDS log any time now.
Here is the info he sent me earlier. The short version is that with my original ABS module, we can run all the Haldex tests, but with the R32 module, we can't communicate with it or the Haldex. In neither scenario, however, with 4Motion work yet:
My mechanic performed a similar conversion in his GTI, which is why he references his car.
I will post VCDS log later this evening. Thanks in advance for any assistant.
Here is the info he sent me earlier. The short version is that with my original ABS module, we can run all the Haldex tests, but with the R32 module, we can't communicate with it or the Haldex. In neither scenario, however, with 4Motion work yet:
With the ABS module installed that you sent me, the car throws a bunch of fault codes. ESP defective, Steering angle no basic settings, incorrect coding, & AWD no communication. I believe that the ABS module is bad due to the ESP Sensor Unit Defective fault code. With this ABS module installed AWD is not working while driving the car. I can get the front wheels to spin in 1st gear. I plugged your original ABS module in to test and I have ZERO fault codes. However, AWD still doesn't work. I can however communicate with the AWD module, scan for faults, perform output tests, etc. I can activate the Haldex pump, etc. The AWD module does throw fault codes for no communication with ECU and no communication with ABS. My car still to this day throws those fault codes in the AWD module, however my AWD works without any issues.
So I am thinking that we might need a correct ABS module that is actually working.
I will say that the coding for the ABS module looks funky. I am not sure how it got to 23049 because if you look at all of the coding options the largest number you can add up to is like 19081. Any attempt to change coding in the ABS module results in a request out of range message. I also cannot log in to security access. Ross Tech Wiki states the security access code should be 40168, but it will not accept that.
My mechanic performed a similar conversion in his GTI, which is why he references his car.
I will post VCDS log later this evening. Thanks in advance for any assistant.