Battery Malfunction

[More]

I could hear little tiks and tacs coming from the dashboard as the on board computer works everything out.

[thstone]

Originally Posted by More

I could hear little tiks and tacs coming from the dashboard as the on board computer works everything out.

The DME (aka ECU, aka engine computer) is in the rear trunk.

The immobilizer (aka car alarm) is under the driver seat.

[particlewave]

Originally Posted by bwdz

I agree, something is fishy here, there is no way it would just add a random amount. Either someone was driving the car while the OP was unaware of it or he is just trying to find out how to turn the mileage back, sorry to be so suspicious but that is just not plausible.

Wrong. Mileage errors on the cluster are not uncommon and More is not trying to do anything "fishy".

Originally Posted by thstone

The DME (aka ECU, aka engine computer) is in the rear trunk.

The immobilizer (aka car alarm) is under the driver seat.

And the OBC (on board computer) is in the cluster. The mileage is stored there (and possibly the ECU and immobilizer).

Try disconnecting the cluster for a few minutes and see if that helps.