V10 Transfer Case - Binding - Club Touareg Forums
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post #1 of 13 Old 06-02-2018 Thread Starter
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V10 Transfer Case - Binding

Sorry if this has been covered before, but the Forum Search is non-functional for me at this time [connection to sphinx03:3312 failed (errno=0, msg=php_network_getaddresses: getaddrinfo failed: Name or service not known)]

Here's the issue. I recently had the transfer case replaced in my '04 V10 (160K miles, I've owned since new). As part of the service, I installed a new chain, seals and a refurb stepper motor. In the weeks/months/years leading up to this work, I had noticed an increase in the frequency of a popping/binding issue when making low-speed turns (especially left turns from a stop). I ended up replacing my transfer case when the popping/binding issue turned into a more consistent issue and then a rather chilling grinding noise. There were broken pieces in the transfer case.

In any event, now the work is done and the SUV drives almost like it was new. Almost. I still get the intermittent popping/binding symptom when making low-speed turns. I'd really like to fix this and (hopefully) prevent destroying another transfer case. From what I recall, this "popping/bindingon low-speed turns" symptom is typical of the old "binding" issue on some T1 version Touaregs for which a TSB was issued to change the programming of the Differential Control Module (controls the stepper motor, I believe). I checked with my local dealer, but the Service Consultant could not find a record of my ever having this TSB performed [TB.01-06-08].

Long story, short - I've asked my local VW dealer if they could confirm the programming level of my Differential Control Module (DCM) and if it isn't at least "0122" to flash it to the latest. Since the warranty has long expired, I am willing to pay for this. Unfortunately, the service tech has been unable to reproduce the popping/binding (of course), and until they do, they apparently cannot just validate/flash the DCM.

Is there any way I can use VAGCOM to at least validate the version of the DCM?

Any other advice?

FWIW - In addition to the transfer case replacement, I've done a number of other repairs over the last year: front drive shaft, center carrier, flex disk, lower control arms, steering rack, etc. The steering and drive train all seem in order on physical inspection.

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post #2 of 13 Old 06-02-2018
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Are all all 4 tyres IDENTICAL as in same size, same make, same model, same tread pattern, and same tread depth to within 2 mm?

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post #3 of 13 Old 06-02-2018 Thread Starter
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All four tires are the same make, model, tread and size (Nitto, Terra Grappler 2, 255/55/18 ). I do rotate my tires every 5K, so I'd like to think the tread depth is close to the 2mm variance, but I'll have to check when I get my vehicle back from the VW dealer.

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post #4 of 13 Old 06-02-2018
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If you're willing to pay for it, why can't they just re-flash the module?? That seems like a lame excuse.

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post #5 of 13 Old 06-03-2018 Thread Starter
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Quote:
Originally Posted by FSJ Guy View Post
If you're willing to pay for it, why can't they just re-flash the module?? That seems like a lame excuse.
This. If the service adviser would not agree to this, I guess I can ask the service manager, but I'm not sure how far I'll get unless they can reproduce the issue. I'm not sure why this is an such an ordeal.

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post #6 of 13 Old 06-03-2018
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Quote:
Originally Posted by 4xMotionTDI View Post
All four tires are the same make, model, tread and size (Nitto, Terra Grappler 2, 255/55/18 ). I do rotate my tires every 5K, so I'd like to think the tread depth is close to the 2mm variance, but I'll have to check when I get my vehicle back from the VW dealer.

Damn, I was hoping for an easy fix for you!

VW Touareg models are as follows:
Generation 1: T1 is model 7LA & facelift T2 is model 7L6
Generation 2: T3 is model 7P5 & facelift T4 is model 7P6
Generation 3: T5 is model CR7 [Not available in "VW Atlas" North America!]
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post #7 of 13 Old 06-03-2018
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check via VCDS if the steering wheel module registers 0 degrees when the steering wheel is pointing straight.

PS : is the esp liht flashing when the binding occurs?

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post #8 of 13 Old 06-04-2018 Thread Starter
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I will check the steering wheel measuring block with VCDS. I can say that the system information screen does show the steering position changing as I turn the wheel.

I did read about the ESP flashing symptom in the TSB, but I don't recall seeing it. I didn't specifically watch for that...

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post #9 of 13 Old 06-04-2018
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Quote:
Originally Posted by 4xMotionTDI View Post
I will check the steering wheel measuring block with VCDS. I can say that the system information screen does show the steering position changing as I turn the wheel.

I did read about the ESP flashing symptom in the TSB, but I don't recall seeing it. I didn't specifically watch for that...
keep an eye on the light.

Clock spring may be functioning but indexed wrong.

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post #10 of 13 Old 06-04-2018 Thread Starter
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Quote:
Originally Posted by 4ePikanini View Post
keep an eye on the light.

Clock spring may be functioning but indexed wrong.
Interesting.
If the steering angle measuring block indicates the angle is off 0 during straight driving on level ground, should I then re-calibrate the 0 point using my VAGCOM?

VW Touareg (7L) Brake Electronics - Ross-Tech Wiki

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