When you encounter this issue this means only one of two things – DME is not supported (check ISN support matrix on the abrites.com website) or alternatively the car is “falling asleep” in which case you should keep it awake as per one of the ways above.

Important notes

• Check the support matrix first. It is the cheaper of the two tests, and if the DME is unsupported no amount of keeping the car awake will change the outcome.

• If a specific DME is unsupported, Abrites can analyse it from the Online logs and add support dynamically on the server — you then repeat the operation with nothing reinstalled. See 12 ISN reading.