Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4538
Selection of faults, after towing trailer?
I towed a friends car from Southampton back to Norfolk today. On the north side of the M25, at about 14:00, I noticed a park brake warning pop up. Info said 'Park Brake (fail?)'. I couldn't stop, so did another 20 miles to the services on the M11. Park brake appeared to work, on and off ok, no binding, so I carried on. I also noticed the gear indicator was very slow to indicate the next gear when I changed. When I got home, the display said 'auto park brake release not functioning' .
Checked battery voltage, and alternator output, thinking the alternator might have died, but seems to be ok.
Just scanned the car, list of faults below. The interesting ones are both at 14:09, Parking Brake, and transfer case.
Where should I start looking?
Click image to enlarge
Model L319 - Discovery 3 2007
Vehicle scanned on 21 Jan 2017 17:51:20
IIDControl 2.9.4.5 Android - IIDTool BT V3.0 B2444
Body Control
• B1B70-81 (28) Local interconnection network bus circuit 2 - Bus signal/message failure - invalid serial data received
( on 14-01-2017 18:58:54 at 169890 km )
• B1D09-11 (68) Right trailer turn signal circuit - General electrical failure - circuit short to ground
( on 20-01-2017 20:44:43 at 170090 km )
Instrument Pack
• U0132-87 (28) Lost communication with ride level control module - Bus signal/message failure - missing a message
• U0159-87 (2E) Lost communication with parking assist control module - Bus signal/message failure - missing a message
Parking Aid
• B1B44-01 (68) Rear right outer sensor - General failure information - general electrical failure
Parking Brake
• U0101-87 (A8) Lost communication with transmission control module - Bus signal/message failure - missing a message
( on 21-01-2017 14:09:50 at 170524 km )
Transfer Case
• P0820-00 (28) Gearshift lever X -Y position sensor circuit
( on 21-01-2017 14:09:50 at 170524 km )
Ventilation
• B1B74-00 (28) Front foot-defrost mode stepper actuator
( on 09-01-2017 04:17:09 at 169620 km )
• B1B75-00 (68) Front foot-face mode stepper actuator
( on 09-01-2017 04:17:10 at 169620 km )
• B1B76-00 (28) Front left air blend stepper actuator
( on 09-01-2017 04:17:10 at 169620 km )
• B1B77-00 (68) Front right air blend stepper actuator
( on 09-01-2017 04:17:10 at 169620 km )Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
i had very similar turned out to be the brake bulb shorting on the trailer, got transmition fault, park brake fault, suspension lowered every time i pluged in the trailer lights if i towed without the lights plugged in all was fine, a brake bulb can cause sooooooo many problemsRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
21st Jan 2017 6:21 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4538
I'll check the trailer out in the morning. I Just parked it up for tonight after a 400 mile round trip!
I borrowed the trailer from a friend, he has added side marker lamps since I last used it, and they are 24V led's. I did think that might be an issue when I took it.
Could 24V led's cause an issue? They were quite bright when I set out in the dark this morning.Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
no idea about the led's but if the car drives ok without the trailer then its probably the lights mine went on a busy duel carriageway with no safe area to pull off not nice when the suspension lowersRange Rover Westminster 4.4 TDV8 what a car
Discovery 3 HSE 2006 gone but never forgotten
Member of the 234,567 mile club😎
21st Jan 2017 6:30 pm
Oswiperus D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1600
Sounds like XY sensor has lost calibration possibly due to some clutch slip, you can recalibrate it. Have a look at this thread.
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4538
Thanks Stu, will try that.
It currently has Park Brake Fault, No Auto Park Brake Release, No Parking Sensors, I'm guessing no reversing lights. So that would add up with XY sensor.
Just out of interest, does anyone know why clutch slip would throw the XY position sensor out? The clutch slips every time I pull away. There cant be a flywheel to driven plate encoder surely?Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
22nd Jan 2017 10:39 am
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4538
Just been out and done the XY sensor calibration procedure, and it's fixed!
Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
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