Member Since: 28 May 2007
Location: Cheshire
Posts: 282
Trailer board connected, car brake lights staying on?.
I went out with the bike rack on yesterday morning and it was dark enough to have the sidelights on. The care felt odd from the get go and about 5km in to the journey threw all the transmission and suspension errors that led me to believe the brake light switch was faulty. However, it turns out that the particular combo of rack hooked up and car lights on keeps the car brake lights on at all times.
With the car lights off with the rack still connected, everything works fine!
All fuses are okay, is it perhaps a faulty switch but intermittent?
I'm struggling to see the logic of how the error is produced in order to solve it, has anyone had this happen before or know more about the wiring than me?2011 D4 SDV6 HSE
2008 D3 TDV6 HSE
2005 D3 V8 SE - left in Oz..
3rd Mar 2014 2:23 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
If everything works before you plug it in why not a faulty light board - do you have another you can swop with?
Beyond that you can test the towing socket with a DMM.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 28 May 2007
Location: Cheshire
Posts: 282
It probably is, but I'm struggling to see how turning the lights on would cause this behaviour?2011 D4 SDV6 HSE
2008 D3 TDV6 HSE
2005 D3 V8 SE - left in Oz..
3rd Mar 2014 2:41 am
waterbuoy
Member Since: 26 Oct 2013
Location: Argyll
Posts: 2884
Agree with Robbie - sounds possible that a fault with the side lights on the trailer board is the issue - especially if it has twin element bulbs (brake and side light)?
Easy step is to try another light board.Currently 2009 Disco 3 SE, 2013 MY D4 HSE and 2016 D4 SE
Previously:
TD5 Defender 110 CSW (230k miles)
300TDi Disco 1 (289k)
4 RR Classics (300-350k each, 2 manual, 2 auto)
110 V8 CSW (220k)
S3 109 hi cap pickup (ex RN)
S2A 88 Safari SW with lpg conversion (bloody lethal)
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