How can I restore the ecu if battery has gone dead and car is in limp mode now?
What is your question?
My 1997 A4 quattro 1.8T was parked over the summer and I did not realize the battery had died. It starts fine, idles great but won't rev above 2k or so then drops out and comes back drops out and comes back. I am assuming the ecu or fuel inj. comp. eeprom has lost it's program.
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