towing electrics

Faults and Technical chat for the Discovery 5
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ivantaylor41
Posts: 3
Joined: Sat Aug 21, 2021 12:53 pm

Post by ivantaylor41 » Sat Aug 21, 2021 1:08 pm

I recently changed from a Disco 4 to a 5 (2017). I tow a caravan and with the 4 everything worked perfectly, but on the 5, after a few minutes of towing the caravan sidelights stop working. All other lights continue as normal. When I stop the unit, switch off the ignition and then restart the sidelights come back on, has anyone had the same problem or have any ideas??

Craigp
Posts: 291
Joined: Mon Feb 20, 2017 2:34 pm

Post by Craigp » Mon Aug 23, 2021 8:52 am

Hi Ivan not noticed this happening on mine but then you may be more observant than me. I'm assuming when on main lights at night everything performs as it should?
3litre SE. Monticello Red. Electric deployable tow bar.

Craigp
Posts: 291
Joined: Mon Feb 20, 2017 2:34 pm

Post by Craigp » Mon Aug 23, 2021 1:43 pm

Further to my previous post. Just towed the van for a hour and half all lights stayed on.
3litre SE. Monticello Red. Electric deployable tow bar.

ivantaylor41
Posts: 3
Joined: Sat Aug 21, 2021 12:53 pm

Post by ivantaylor41 » Mon Aug 23, 2021 3:27 pm

Even when I put the main lights on the caravan side lights stay off unless I stop the car and restart it, then same thing happens. I had thought of a loose connection, but the side lights have separate leads as supply, but only one earth. Perhaps I should try connecting the earth to one of the other two on the 13 pin plug. Any thoughts?

Craigp
Posts: 291
Joined: Mon Feb 20, 2017 2:34 pm

Post by Craigp » Tue Aug 24, 2021 10:15 pm

Sorry Ivan no idea. Certainly sounds like poor connection somewhere. Good luck
3litre SE. Monticello Red. Electric deployable tow bar.

Craigp
Posts: 291
Joined: Mon Feb 20, 2017 2:34 pm

Post by Craigp » Tue Aug 24, 2021 10:18 pm

3litre SE. Monticello Red. Electric deployable tow bar.

ivantaylor41
Posts: 3
Joined: Sat Aug 21, 2021 12:53 pm

Post by ivantaylor41 » Mon Aug 30, 2021 4:13 pm

CraigP, sorry for the delay in response, just had 4 grandchildren staying for the week. Thank you for the link; it doesn't solve my particular problem but perhaps points more to the car (possibly software). I thought about the earth being faulty but since this also covers the brakes and indicators which keep working it might be something in the car which switches the lights off. I am not convinced either way. I will try checking with the car engine running, but not moving to see if the lights still switch off, at least it will eliminate a loose connection if they switch off.
Thanks for your support.

Ivan

Craigp
Posts: 291
Joined: Mon Feb 20, 2017 2:34 pm

Post by Craigp » Thu Sep 02, 2021 10:45 am

Hi Ivan so what happens to the lights when after they have switched themselves off but you stop but don't swt the engine off do they remain off would it be possible to check with a meter then to see if voltage has dropped to side lights?
3litre SE. Monticello Red. Electric deployable tow bar.

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