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PARK BRAKE FAULT / GEARBOX FAULT

24K views 34 replies 12 participants last post by  nvjs25  
#1 ·
I have a 65 plate discovery sport 2.0litre , on Friday I got into car and was presented with a park brake fault and gear box fault warning - I was unable to move gear selector - accelerator pedal wouldn’t work - park brake making engagement and disengagement noise when pressed . I left the car overnight as it was late and In the morning the car started perfectly fine with no warning messages on dash but I did have an engine management light on. I scanned with an OBD reader which automatically removed the engine management light without being manually removed and showed up 0 codes used the car saturday , Sunday and Monday as normal then on the way back from work on Tuesday I stopped to get dinner and when I got back in the car I had the same situation. left the car and walked home and got a lift back 3 hours later and same situation car fine with engine management light on - further notes - gear changes are fine no slip on clutch no problem changing gears handbrake working fine no funny noises scanned again 0 codes engine management light gone

thanks

Hayden (30yrs old)
 

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#2 ·
Before some else mentions it how old is the battery? Have you tried to put battery on charge overnight. So many of these strange happenings seem to be caused by low voltage.
 
#3 ·
my old man suggested this I don’t have a battery charger to try tonight but can definitely get my hands on one tomorrow

I really do hope so cars been a dream since I had it mid last year can only imagine car has been sat at private dealership for a while and may well have a low battery will definitely check tomorrow and update

thank you
 
#4 ·
Yeah, I'd be starting with the battery. If it's > 4 years old, get a new one.
 
#11 ·
Did you get the Battery Management System reset when you replaced the battery?
I'd do that, then get the charging system checked. As it's 'smart' it'll need someone who knows what they're doing.
 
#12 ·
After doing research was under the impression there wasn’t a need for a battery reset , how are these done any clue’s ? I’m currently waiting for RAC and a tow truck to get plugged into a pro diagnostic’s machine as fault seems to have stuck this time and won’t clear after leaving vehicle for a few hours - recent changes to driving style before fault re occurred - slight slip into reverse with Flashing R when selecting reverse then judder into gear and continues as normal ? Is this a switch failing maybe ?
 
#14 ·
annoyingly to reset the BMS you need a proper LR computer. I trawled round local garages, had some try with their generic devices and nobody could do it (though I imagine one exists somewhere). I ended up at a local LR specialist who sorted it out for me for around £60. In my case, the only problem was the stop-start not working but in extreme cases I guess it could cause charging issues. Still, the AA should be able to test the alternator whilst they're there.
Your theory WRT the switch is also possible however. Just odd if it works fine with a 100% charged battery.
 
#18 ·
I didn’t , however low voltage will also cause this problem so charge your battery or get a new one , I fitted the battery myself I’m pretty sure on discovery sport there isn’t a battery management system you need to reset after changing it , I could be wrong but I didn’t do a reset and car was perfectly fine until intermittent problem occurred again. Waiting for Friday and full diagnostics then will be straight on here to update.
 
#20 ·
Hope you the proper battery. What is the specs of the new battery Place battery on charge overnight and it should be OK. Some Discos need the BMS reset for the new battery and others get away with not doing it.
 
#22 ·
all ~ 63

14:56

PIC0018343.jpg

Land Rover

V3.33

Land Rover > Automatic selection > Auto scan > TCM (Transmission Control Module) > Trouble codes

DIC

P0850-29

P1707-72

Р0936-64

Status

Permanent

Permanent

Permanent

Trouble codes

Descrintion

P/N switch input circuit

Transfer case neutral or park/neutral indication cIrcuIt

Hydraulic pressure sensor circuit intermittent
 
#25 ·
Yeah it’s been too 2 specialists maybe not so much zf specialist but the one guy is very well spoken off around here , I’ve decided to have it taken to Land Rover themself who after booking it in have notified me that is actually wanted back in for a recal on the “ the epas motor bolt replacement “ but as I’ve had the car almost a year now and haven’t been notified about this whilst driving with 3 kids etc in the car I think I might be entitled to a small good gesture will apology so I’m going to play my hand tomorrow with customer relations I’m paying £225 for 1 hours diagnostic work with further charges for extra time and will certainly update with either a eye watering bill which I’ve just prepared myself to take straight on the chin in hopes that as this has now had new turbo , new bottom end or something along them lines , new dpf system new crank shaft and numerous other bits and bobs :/ that the car might last the 3 years I have left with it and get me a small return on my investment when sold
 
#27 ·
Have the garages checked the oil level in the transmission? the DTC P0936-64 Hydraulic Pressure Sensor Circuit Intermittent - Signal plausibility failure meaning Automatic transmission internal failure with the action being check fluid level, rectify leaks and top up, if that doesn't work install new transmission.
 
#28 ·
I can ask the question and relay the answer I’m assuming this would be included in checks , they said they had also tested all “accessible” wiring. I’m feeling pretty confident with the customer relations route it’s my expertise and I’m pretty sure I’ll get a discount out of them for my troubles