Last night I had a number of things installed on my car by Steve@MbenzNL - (folding mirrors, Bi Xenons, I-Pod kit, etc) and everything went well. This morning when I started the car I got a warning message (BIG RED BATTERY) telling me to seek service. This happened again when I started the car to go home from work.

Any ideas?

 

How long did they have the car?? If for a couple days and with all that electronic equipment installed the battery may just be low. Do you have a short drive to work?? Maybe the battery needs a good drive to get fully charged.

Or something you just installed is now drawing current from the battery when it's supposed to be "sleeping".

Or during the installation someone arced a wire and now the main pre-fuse is blown. But that's probably not the case...just throwing ideas out there.