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Haldex ECU fault and other faults, advice needed please


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Hi there, I bought a V6 4Motion on Sat and I think I bought a bit of a pig, I love the car but not the problems I have with it.

On the way home it started squeaking on the o/s/r wheel. It turns out the caliper is clamping on as maybe its sticky and this over time has caused the Haldex ECU to fail. Below is a list of things my local VW specialist has recommended.

The car now has ABS light on and the handbrake light on, it wont go off, I think they jammed the caliper even tighter on the disc, its really rubbing now and I'm worried its gonna mess up the disc and pad and mess up the 4wd!

They said the Haldex ECU could be fvcked becaused the caliper is jammed on and confused all the sensors into controlling the rear diff on the Haldex system.

I am franticly shopping around for a used Haldex ECU and having no l luck. Any idea where I can get a cheap HALDEX ECU from?

Any help/advice would be appreciated. Thank you.

I'll show you the list they have written up for me, part, lab time then total cost.....

Haldex ECU - 2hrs - £838

Lambda B2 S1 - 1 - £174

Rear ARB bushes - 1.5 -£145

Front ARB bushes and clamps - 1.5 - £189

o/s/f outer CV boot - 1.5 - £119

n/s tie rod arm & end - 1 - £160

o/s/r caliper - 1 - £220

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Sounds all a bit strange but could be broken down into parts alot cheaper to sort out. Sounds like they are fishing for work but that is my personal opinion.

1. Disconnect / bypass Haldex for now free

2. Lambda replace at local exhaust fitter part + £35 labour

3. Rear ARB bushes do yourself £20-£30

4. Front ARB bushes and clamps £50

5. CV boot VW item + fitment by specialist £100

6. Tie rod and arm + fitment £80

7. second hand caliper £20-£30

Altogether less than £250 which is still steep and Haldex would still need sorting at a later date. Might be worth looking into an aftermarket warranty.

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http://forums.vwvortex.com/zerothread?id=1525861

Alot of information here and some that hints that the Haldex will protect itself rather than get damaged by brakes binding or handbrake left on. Quite a bit of reading and I only scanned through.

As for position of ECU, it is on the unit itself. Aftermarket ECU"s are cheaper than oem ones and there is a 4mo in a scrapyard near me at the moment. You could get a caliper and ecu from there.

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Hi there, I managed to get a scan of the system, here are the results, I hope this maybe give you a clearer idea of whats wrong. Thanks.

VAG-COM Version: Release 409.1-S

Chassis Type: 1J - VW G/J/B Mk4

Scan: 01,02,03,08,16,15,17,19,22,35,46,56

-------------------------------------------------------------------------------

Address 01: Engine

Controller: 022 906 032 E

Component: MOTRONIC ME7.1 G V007

Coding: 00132

Shop #: WSC 31414

1 Fault Found:

17516 - Oxygen (Lambda) Sensor Heating: B2 S1: Performance too Low

P1108 - 35-10 - - - Intermittent

Readiness: 0000 0000

-------------------------------------------------------------------------------

Address 03: ABS Brakes

Controller: 1J0 907 379 AB

Component: ESP 20 CAN V005

Coding: 00214

Shop #: WSC 31414

4 Faults Found:

01324 - Control Module for All Wheel Drive (J492)

49-00 - No Communications

01044 - Shareware Version. To Decode all DTCs

35-10 - Please Register/Activate - Intermittent

01279 - Shareware Version. To Decode all DTCs

27-10 - Please Register/Activate - Intermittent

01279 - Longitudinal Acceleration Sensor (G251)

57-10 - Electric Circuit Failure - Intermittent

THIS IS FROM TESTTING THE AWD SYSTEM

VAG-COM Version: Release 409.1-S

Control Module Part Number: 02D 900 554 B

Component and/or Version: HALDEX LSC ECC 0006

Software Coding:

Work Shop Code:

3 Faults Found:

01312 - Powertrain Data Bus

37-00 - Faulty

01316 - Shareware Version. To Decode all DTCs

49-10 - Please Register/Activate - Intermittent

01314 - Shareware Version. To Decode all DTCs

49-10 - Please Register/Activate - Intermittent

THIS IS AFTER SCAN OF ABS SYSTEM

VAG-COM Version: Release 409.1-S

Control Module Part Number: 1J0 907 379 AB

Component and/or Version: ESP 20 CAN V005

Software Coding: 00214

Work Shop Code: WSC 31414

4 Faults Found:

01324 - Control Module for All Wheel Drive (J492)

49-00 - No Communications

01044 - Shareware Version. To Decode all DTCs

35-10 - Please Register/Activate - Intermittent

01279 - Shareware Version. To Decode all DTCs

27-10 - Please Register/Activate - Intermittent

01279 - Longitudinal Acceleration Sensor (G251)

57-10 - Electric Circuit Failure - Intermittent

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