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Gearbox Fault Detected (and some grinding sounds)

55K views 86 replies 25 participants last post by  avaule  
As of yesterday, I have 'Gearbox fault detected' too. Thanks forum buds for your helpful thread!
Nov 3 will wait 90 minutes for Cole European Svc to read the codes (2 days to have loaner car ready) to confirm. 33k miles since purchase new. Already had major surgery for BECM replacement 2 ys ago; was an inch from lemon buyback but still in lust.

Symptoms: First dash warnings 10/30 while driving, no noises. On 10/31 two more warnings on 2 mile trip, then parking brake engages in drive while traveling 2-3 mph, about to engage reverse. Afterwards goes forward and reverse at low speed a few times without incident, now parked.
Will be driving 11/2 to doc appt and 11/3 to dealer. Buying my first lottery tix if no grinding occurs, wish me luck
 
MUCH worse than expected. Update to my post #40. Disappointed nobody asked, but happy to share:
Went into Cole European armed with TSB printout for Wiring harness defect. During their diagnostics, they discovered metal in the motor fluid sample, so my car is getting a NEW FRONT MOTOR ($8k retail) as a result, with 25-30 hours labor guessed. Of course, wiring harness also will be replaced at the same time, saves a few hours for that when done with motor.Luckily a motor and wiring harness were nearby in N.CA so maybe total time is under 2 weeks.

Cole technicians had experience with Gearbox Fault and dug way deeper than I asked or imagined necessary. I don't understand all the connections with the parking brake engaging and motor operation. My car slammed on the parking brake only twice at 2-3 mph just before I drove it to the shop (tow would've been safer) so unclear if just that created metal in the oil / fluid. No grinding detected while driving. A few times over a year I had felt a bit of initial jerking acceleration under hard acceleration from standing, but no other clues motor had problems.