Symptom
The warning message "Fault All-wheel drive system" is displayed in the instrument cluster. Fault codes can be stored in the fault memory of the all-wheel drive control unit.
Causes and remedial action
Cause Due to incorrect sealing of the electric plug connection on the transfer case servo motor, moisture can get into the connector. As a result, the contacts can become corroded.
Model Year:
As of 2011 up to 2017
Remedial Action
In the event of a customer complaint, check the plug connection on the servo motor and the servo motor itself for damage:
- If the electric plug connection on the transfer case servo motor is corroded, replace section of cable including electric plug connection using a repair kit.
- If the servo motor is damaged, replace section of cable including electric plug connection and transfer case servo motor.
Tools:
- PIWIS Tester
- Charger
Full document
Transfer Cases
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ATC13 : BMW
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ATC300 : BMW 3 / 5
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ATC350 : BMW X1 / 5 / 7
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ATC35L : BMW 1/2/3/4/5/6/7/X1
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ATC400 : BMW X3
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ATC450 : BMW X3 /X5 /X6
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ATC45L : BMW X3 / X4 / X5 / X6
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ATC500 : BMW X5
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ATC700 : BMW X5/X6
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BW4430 : Audi Q7
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CB40 (IRD) : Land Rover
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DCD : Mercedes ML / GL
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DCS : Mercedes ML / GL / R
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HAA350+ : VAG
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HAA450 : VAG
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Hyundai ATC : Hyundai
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ITC PLA : Land Rover
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LX : Chrysler
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M300+ : VW
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Macan 95B : Porsche
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Maserati ATC : Maserati
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MFA RDM : Mercedes, Infiniti
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NV125 : BMW X5
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NV225 : Land Rover
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NV235 : VAG
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NV247 : Jeep
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PL72 ATC : Porsche
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PL72 T : VAG
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PQ75+ : VW
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RDM (312/319) : Fiat
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SEC : Mercedes S/E/C-class
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VAA350+ : VAG
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VG150 : Mercedes
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VG150 E : Mercedes
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W61G : Nissan / Infiniti