Reset after changing battery
2012 VW Passat mu car won't start after replacing
the battery to I have to reset the computer? If so
I don't know anything about VW's but changing the battery should not require a "reset". Try double checking your work - Pos & neg cables hooked up to the right terminals? Wiring connections clean and tight? Battery fully charged? Do your lights illuminate when you turn them on?
VW immobilizer kicked in. Preventing a start up. check your manual or check back later if you need the procedure.
the biggest mistake people do with late modal cars is think they can remove the battery with out a back flow of current to keep the computer from wiping it self. when you go to replace or remove a battery you need to attach a tender to the cables to keep the voltage in the car going or else the car forgets all its settings. if you have a blue key symbol on the dash the immobilizer is on and won't allow the car to run. This often results in needing to reprogram your key to your car. ou can try this tho.. put the key to Power ON only and wiat 15minutes. after the time is up turn to power off then try starting the car. this might or might not work.
Looking for a Used Passat in your area?
CarGurus has 411 nationwide Passat listings starting at $2,995.
Search Volkswagen Passat Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Volkswagen Passat Experts