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Stop/Start Issue for Jaguar

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Some owners of 2015 Jaguar F-Type, XE, XF and XJ vehicles may report while pressing the Auto Stop/Start button, a warning message may be displayed in the instrument cluster (Auto Stop/Start not available).

Some owners of 2015 Jaguar F-Type, XE, XF and XJ vehicles may report that while pressing the Auto Stop/Start button, a warning message  (“Auto Stop/Start not available”) may be displayed in the instrument cluster. DTC B12CD-87 will be logged in the gateway module (GWM).

The ignition live input into the vehicle quality module (VQM) may have a poor connection, and/or no LIN circuit between the VQM and GWM.

Check ignition live circuit into the VQM 6-way connector pin 2. Repair as required.

For F-Type and XJ...check the LIN circuit between the VQM 6-way connector pin 4 & pin 13 of the GWM. Repair the connector as required.

For XE and XF...check the LIN circuit between VQM 6-way connector pin 4 & pin 58 of the BCM (body control module). Repair as needed.

If these steps do not resolve the issue, replace the VQM.


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