If I clear the faults they come back as soon as I press the brake pedal. Which I guess makes sense if it's the solenoid?
I can get the shifter to move by removing the little cover and lifting the plastic lever. However I end up with transmission fault reduced gears message.
I've checked the wires from the Mechatronic to the gear selector specifically pins:
Continuity is good so I know the signal/power will get through. I can hear a click when I press the brake pedal it seems to come from around the Steering Wheel. I don't hear anything near the Gear selector (I thought I should because of the solenoid).
Any ideas?
18th Oct 2020 12:55 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Check resistance of solonoid
Sound like it’s faulty.
18th Oct 2020 7:47 am
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
Could also be a faulty brake switch
18th Oct 2020 8:08 am
Nutterwatts
Member Since: 12 Aug 2020
Location: Bristol
Posts: 57
PeteK is the solenoid a separate part to the gear selector housing or do I have to change the whole unit?
Aja4x4 I already changed the brake switch so know it’s not that
18th Oct 2020 9:19 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Member Since: 12 Aug 2020
Location: Bristol
Posts: 57
Any idea what the resistance value should be for the solenoid? I’m getting a reading of 27ohms
18th Oct 2020 10:17 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
No, but it sounds ok.
Are you able to disconnect it and apply power directly ?
Get polarity correct incase it has a diode
18th Oct 2020 10:20 pm
Nutterwatts
Member Since: 12 Aug 2020
Location: Bristol
Posts: 57
Well I reseated the round mechatronic connector and all is working again!
Solenoid clicks and you can move out of park, really confused on why it’s done that???
Guess I have to see what happens over the next few days
18th Oct 2020 11:55 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
sounds like poor connection over several pins (as you had 2 fault codes)
19th Oct 2020 12:20 pm
lronly
Member Since: 01 Nov 2013
Location: Mellieha
Posts: 66
did you get a fix to this problem? or does anyone know any more info about this symptom
29th Dec 2020 9:13 am
Nutterwatts
Member Since: 12 Aug 2020
Location: Bristol
Posts: 57
Hi Ironly,
Yes for me it was the Mechatronic connector under the car that plugs into the transmission.
Water ingress into the connector had caused some of the pins to corrode and the bits of rust were rattling around in the connector causing multiple issues!
29th Dec 2020 2:12 pm
lronly
Member Since: 01 Nov 2013
Location: Mellieha
Posts: 66
Thanks.
Did you have to open gearbox sump and take of mechatronic?
29th Dec 2020 6:27 pm
Nutterwatts
Member Since: 12 Aug 2020
Location: Bristol
Posts: 57
No it was the connector that plugs into the socket. (See pic)
I had to splice a new connector on.
I'd start by checking the continuity of the cables, also park brake switch. What is the problem you have? Car stuck in park?
Member Since: 01 Nov 2013
Location: Mellieha
Posts: 66
Hi
Is it possible that there are no other people with this fault....
I have 2 cars with the identical fault.... changed the mechatronic with a new one,changed the complete shifter, changed the gearbox wiring loom, changed the small wiring loom in the centre console.... and still the fault persists.... the voltage difference between the red and yellow wires is just 9V and I am sure its meant to be 12v
Regards
Josef
25th Feb 2021 9:56 pm
thumperer
Member Since: 22 Oct 2017
Location: nope
Posts: 24
Josef,
Did you ever figure this out? This sounds a lot like the symptoms which I just posted (or at least like part of them):
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