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Fmead99

Member Since: 02 Dec 2019
Location: Wiltshire
Posts: 7

Electrical issue related to brake circuit - 2014 tdci

Hi all,

I have a bit of an issue. Recently my defender has started cutting out when I brake. Occasionally it'll cut out if I indicate or engage reverse. But these are much rarer.

I disconnected the brake pedal switch and drove around the farm for a while which seemed to remove the issue though occasionally threw up the ESP icon on the dash.

I took the switch to pieces and noticed the connection is worn and a charred. Guess that suggests an issue in the circuit?

I have checked my main battery terminals and the ground. But all seems ok. Is anyone familiar with this issue? Just before I start taking things to pieces.

All help gratefully received.

Note: I have double Odyssey battery system and two weeks ago installed an inverter of the leisure battery (pos and neg). But I ran a ground to the neg of the main battery. Can't see that being related but thought I'd mention it!

Note 2: Years ago I also fitted cruise control that splices in to the brake pedal switch. But that all seems to be working fine and connections look healthy.

6th Aug 2022 4:29pm

carrotbay

Member Since: 18 Aug 2013
Location: Northants, UK
Posts: 699

2008 Defender 110 BMW M57 3.0 Diesel XS CSW Auto Santorini Black

Hi .. did you ever solve this?

I’m having the same problem occasionally when braking at low rpm and the engine dies. It will start back up again no problem.

28th Aug 2022 2:07pm

Fmead99

Member Since: 02 Dec 2019
Location: Wiltshire
Posts: 7

Hi,

I had various issues and fixed all of them. Not sure exactly which one solved it but in summary I changed the black brake sensor switch. And a problematic indicator stalk.

But I think the main issue was a wobbly spade on the back of the ignition barrel switch.

Good luck!

28th Aug 2022 4:41pm

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