landtuna
Registered Member
Took my '12 4.6 in today. After a 2.5 hour wait, the service adviser came out and advised me the download process had "crashed" the car's computer and I would require a new head unit.
Installing a new NAV map will not cause the head unit to "crash". I'm thinking they did something else that damaged it. The normal process is to put the car on some sort of charger (because the ignition system needs to be energized while doing the update) then load the DVD's (there are three of them at last count). If the load "crashes" during load they have to restart it but I think it can restart from the last DVD and not the first one.
They may have done something to damage the DVD player which is how the new maps are loaded.
Very poor design. The "car's computer (ECU)" has no relation to the head unit.