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Home > Puma (Tdci) > Brake lamp on dash comes and goes on its own
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2289

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I had this and the flickering light drove me mad! Research directed me to check the brake fluid level but as it was within the 'min' and 'max' marks on the reservoir I assumed this not to be the issue.

I went on to clean the contacts on handbrake switch, brake pedal switch and brake fluid reservoir level sender but the light still flickered.
Next I replaced the brake pedal switch (because I broke it cleaning the contacts Embarassed) but the light still flickered.

I then did a bit of playing with the brake fluid reservoir level sender. Connecting both spade terminals together with a piece of wire causes the light to fully illuminate, therefore breaking the circuit (disconnecting the level sender completely) should put the light out. I unplugged the fluid reservoir level sender for a few days and the light no longer flickered so I was fairly sure the problem was here however on replacing the sender unit for a new JLR part the light still flickered - infuriating!

I had read online that wiring insulation can wear through causing a short to earth which can lead to light flickering so I had pretty much given up hope thinking this was likely to be the issue. Then months later I had some brake fluid handy so topped up the brake fluid reservoir slightly above the 'max mark' and low and behold, problem solved!

Lesson learned - always start with the basics!

As said, if your fluid level is plentiful just be careful of overflows next brake pad change
Post #637444 14th Jul 2017 8:21am
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Joe the Plumber



Member Since: 18 Dec 2013
Location: Midlands
Posts: 907

2014 Defender 110 Puma 2.2 HT Fuji White
Just to update this, I've finally got around to topping up my brake fluid (it was literally just below maximum) and, sure enough, the flickering warning light has stopped appearing.

I suppose it seems obvious after the event. Perhaps the warning lights do actually work...!

Thanks again for the help folks.
Post #642511 8th Aug 2017 5:12am
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