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Badger110

Member Since: 06 Feb 2018
Location: South hams
Posts: 1025

2011 Defender 110 Puma 2.4 USW Buckingham Blue

Towing electric box clicking

Abit of an odd one this, at the rear OS corner is a little box which is part of the towing electrics.

When the ignition is off, it clicks...kind of like on.....pause....then off.

You can feel it when holding it, almost like a relay.

There is nothing plugged into the towing side of things and if I wasn't sleeping in it I'd probably never notice it, but alas I did all night last night! I turned the ignition key to the first bit and it stopped...as nothing else has come on I'll probably leave it on that setting for the night

Any idea what might be causing it?

16th Mar 2021 9:07pm

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6478

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

Non LR towing electrics presumably, and this is a voltage sensing relay for the ignition feed.

Genuine LR electrics for Pumas don't have a voltage sensing relay.

Was the vehicle hooked up/on charge when it was doing it?

1988 90 Td5 NAS soft top

2015 D90 XS SW

16th Mar 2021 9:56pm

Badger110

Member Since: 06 Feb 2018
Location: South hams
Posts: 1025

I don't know if it's original, but as you say, if it's a voltage sensitive relay then perhaps it isn't.

The feed for it must be from the main battery, everything else inside that I've added is powered by the leisure batteries which are completely independent, however they are connected to the main battery via a Victron Cyclix relay...but that is only a one way system, ie when the voltage is high enough to open the circuit.

There is no EHU for the main battery or the 3 leisure batteries...everything works without the need for EHU.

At least I know what is causing the noise...the only real difference to me not hearing it before is I've come back from a drive 15 minutes before I noticed the noise.

So something must be causing the VSR to open and close.

16th Mar 2021 10:24pm

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