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23 gr corolla won’t take dealer update.

282 views 8 replies 5 participants last post by  Ttamlin  
Were they plugging directly into the car's OBD port? A lot of dealers installed GPS trackers (some disclosed, some undisclosed to the buyer) and this can cause issues with trying to flash the ECU. I was "upsold" lo-jack tracking on my purchase so I know about it but your dealer might not know you have one. They need to take off the cover, unplug it and connect directly to the car's port. Tuners warn you about this before you flash.