Tdv8-td5- guy

Hey all Thanks for all the comments! I checked with the garage, they only did a bench test, they kept the original box - they looked inside and it looked good so didnt feel the need to swap. There is however a new, weird update. I read on another forum about handbrake issues. So what happens now is: If i put handbrake on, turn on truck, take of handbrake and press it again, i get a different fault (just transmission issues but not limited gears only). That fault I think clears (dissappears from dash) And its not in limp mode. I can drive quite nicely, until I hard accelerate (over 2.5k revs) then the fault comes back with limited gears. I pull over, turn off and on, fault clears. I have another garage lined up to do a full box replacement but i really feel like its not mechanical. I checked the ebay ad, and noticed it had a remap. Im wondering if that has any play here. I really appreciate everyones input, im at the edge of my car knowledge at this point and burnt nearly £2k trying to fix this problem. Painful.

Hey All, thanks for the comments back, ok i'll try and lay out what's happened so far. On Dec 31st, the truck developed a 'transmission' issue. We called the AA who gave us a readout of a P0929 and P0928 (open circuit / rounded circuit) The truck went into a local garage, who then asked us to send it to a land rover specialist (someone with land rover software, access to land rover helpline, etc.) We know that other garage, they are sent land rovers from all over the local area because they are the local specialists. There is no question on their competency. The gearbox was bench tested, it was identified with the help of Land Rover, that the Transmission Control Module was at fault. A module was purchased, it was replaced. The truck did 30 miles, and the problem re-emerged. We also replaced the gear selector switch to rule out the selector solenoid. Land Rover helpline continued to point to the transmission control module. The garage also called the 6 speed ZF manufacturer (they did tell me name but i forget), who were very surprised that not one, but 2 modules have failed. I sourced a third module, we have replaced it again, all the wiring has been checked and rechecked multiple times, the garages electrician has spent the better part of 2 weeks on and off the checks. I got the car back today, after 35 miles I felt a surge, and yet again a 'transmission issue' - the car goes into limp mode. It happens as I accelerated. I've spent 4 figures trying to fix this problem and cannot believe i'm no further forward. I was hoping to see if anyone had a similar experience or could at least point us in the right direction, but both land rover and the gearbox people are also a little stumped. I'm very close to giving up at this point.

Nah sorry mate, you're not understanding. The whole gearbox been replaced

Yeah I did take it to a specialist, the codes we are getting is P0929 open circuit and P0928 shorted round.

Hi All. Last ditch effort here. My tdv8 developed a transmission issue on NYE. It came up on AA as P0929 selector lever lock solenoid fault 2 different garages have tried to fix this, including replacing the transmission control module, and a new gear selector kit. Land rover helpline keep pointing back to the module. 4 months later im exhausted- my last hope is to buy another gearbox for the module and try that, if not ill be forced to sell it for spares. All wiring been thoroughly checked and rechecked. Does anyone have any experience with an issue like this? Id hate to lose the truck but I'm at a loss of what else to do!