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Title: S3 After ECU(018N-018H) swap no AWD... Post by: ChaosPerformance on November 17, 2023, 07:31:15 AM Hello, after changing the ECU from 018N (APY) to 018H (BAM) and adding VVT and Lambda, I'm experiencing a lack of communication with the AWD system. When attempting to connect with the ignition on, there are no issues. However, when I start the car, the communication immediately cuts off. I've also noticed that the Haldex isn't functioning during driving, and when it's wet, the car slips as if it's operating only as front-wheel drive (FWD)
Is there a possibility to make this work, or do I need to revert back to 018N? Thanks!! Title: Re: S3 After ECU(018N-018H) swap no AWD... Post by: aef on November 20, 2023, 01:43:56 AM Hard to believe that there is a relation between ecu change to wideband and haldex.
Plenty of S3 did this swap and none of them hand this problem. Have you checked the coding of the BAM ecu? Would try to disconnect the CAN from the haldex to see if communication via kline stays ON when car is running. Any DTCs stored in the Haldex? Title: Re: S3 After ECU(018N-018H) swap no AWD... Post by: crackerx on November 20, 2023, 06:03:59 AM No relationship between ECU - Haldex.
At least not something signifiant. |