- Joined
- Apr 23, 2014
- Messages
- 111
- Reaction score
- 118
- Location
- Toronto, Canada
- VCDS Serial number
- C?ID=11844
Hello All:
I am troubleshooting a new 2015 Jetta (Canadian spec) equipped with keyless access. The car presents an intriguing (and perplexing) fault: The exterior trunk release operates intermittently, but predictably intermittently.
If the car has been used (woken up) within the past 2 minutes or so, and the car is subsequently locked, the trunk can be opened by pressing the exterior trunk release above the licence plate, as long as there is an authorized key within range. But, if the car has been locked for more than about 2 minutes, there is no response after pressing the exterior trunk release with an authorized key nearby. It is necessary to repeatedly press the exterior trunk release (generally about 7 to 10 attempts) before the trunk will unlock.
My first suspicion was that there was a fault with the KESSY (controller 07, the J523), and this controller was replaced and all the appropriate re-adaptation and re-authorization of keys was carried out at the VW dealer. But, the problem remained, with behaviour unchanged. All the wiring related to the exterior trunk release, including grounds, has been checked and found to be in order.
I want to rule out any physical fault with the exterior trunk release switch (i.e. intermittent switch operation) before pursuing further fault-finding. But, I'm not yet fully familiar with the 2015 products, and I know that the central electrical controller on my 2015 Golf (a different car) is about equal in complexity to the Starship Enterprise.
Does anyone know where the MVB that shows exterior trunk release switch status (operated / not operated, etc.) is within VCDS? Has anyone encountered a problem similar to what I have described in the past? Any suggestions about what path of influence to follow for fault isolation?
Michael
I am troubleshooting a new 2015 Jetta (Canadian spec) equipped with keyless access. The car presents an intriguing (and perplexing) fault: The exterior trunk release operates intermittently, but predictably intermittently.
If the car has been used (woken up) within the past 2 minutes or so, and the car is subsequently locked, the trunk can be opened by pressing the exterior trunk release above the licence plate, as long as there is an authorized key within range. But, if the car has been locked for more than about 2 minutes, there is no response after pressing the exterior trunk release with an authorized key nearby. It is necessary to repeatedly press the exterior trunk release (generally about 7 to 10 attempts) before the trunk will unlock.
My first suspicion was that there was a fault with the KESSY (controller 07, the J523), and this controller was replaced and all the appropriate re-adaptation and re-authorization of keys was carried out at the VW dealer. But, the problem remained, with behaviour unchanged. All the wiring related to the exterior trunk release, including grounds, has been checked and found to be in order.
I want to rule out any physical fault with the exterior trunk release switch (i.e. intermittent switch operation) before pursuing further fault-finding. But, I'm not yet fully familiar with the 2015 products, and I know that the central electrical controller on my 2015 Golf (a different car) is about equal in complexity to the Starship Enterprise.
Does anyone know where the MVB that shows exterior trunk release switch status (operated / not operated, etc.) is within VCDS? Has anyone encountered a problem similar to what I have described in the past? Any suggestions about what path of influence to follow for fault isolation?
Michael