Audi A4 2008 ECU failure . tried to jump start his automobile yesterday since the battery was dead, and he mistakenly linked the positive and negative opposite polarity. Apparently only for a few seconds.
I checked all the fuses and relays and discovered that only one fuse on the radio had blown. The car has a parking brake issue; everything is operating presently, but the fault remains. Also displaying an ecu failure
Thank you for reaching out. You can have your original part repaired at https://www.upfix.com
Here is the service link
https://www.upfix.com/product-category/repair-return/engine-control-repair/