Member Since: 10 Apr 2021
Location: Yo625dt
Posts: 4
Handbrake light starts flashing while driving
Hi new to the group, looking for help with a discovery 3 electric handbrake light which randomly starts flashing while driving and doesn't go off till you stop and start the car, doesn't effect the driving and also the handbrake still works fine, I've plugged a snap on code reader in and thre are no fault code in there. Any help please
10th Apr 2021 5:06 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4649
Are you certain it's the hand brake light? There has be a fault code if there is one logged!yµ (idµ - eAµ) ψ=mψ
10th Apr 2021 5:31 pm
Mthompson93
Member Since: 10 Apr 2021
Location: Yo625dt
Posts: 4
Well it's the same light that come on when you apply the handbrake, can drive a few miles and the car is fine then randomly it will start flashing. Done a full scan on all systems and there is other faults that have been in the for a while now, like I know the air suspension has a fault and so does the egr. But this has just started in last few days
10th Apr 2021 5:50 pm
Dillon
Member Since: 05 Jan 2018
Location: Brighton
Posts: 103
Fluid level???
10th Apr 2021 5:56 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4649
Simple things first. yµ (idµ - eAµ) ψ=mψ
10th Apr 2021 6:25 pm
Mthompson93
Member Since: 10 Apr 2021
Location: Yo625dt
Posts: 4
Fulid level is fine checked all that and even if you unplug the level sensor it puts on a completely different light
11th Apr 2021 8:13 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4649
Is the flash an erratic blink, or does it appear as a "timed" contrived warning?
If it's the latter there should be a fault code logged, and might also be visible in "live values"
If it's the former, it's likely a wiring issue, and the first place to look is at the large block terminal connectors behind the n/s/r wheel on top of the chassis rail.
The wiring here is exposed as it enters or exits the block terminals, and can become frayed due to stone chips or weathering. The terminals themselves very rarely give a problem, but if you unplug them you will have to recalibrate the suspension heights. yµ (idµ - eAµ) ψ=mψ
11th Apr 2021 2:58 pm
Mthompson93
Member Since: 10 Apr 2021
Location: Yo625dt
Posts: 4
As in the wires that go onto the electric handbrake
11th Apr 2021 3:04 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4649
Yes, the chassis loom that feeds the handbrake, air suspension, etc is joined at this junction. An inspection of the wires might reveal an issue here as it's quite commonplace for the exposed wires here to become brittle and damage easily.
However, if the warning lamp looks to be an intentional warning rather than an erratic flash, I would skip this inspection for now until diagnostics have been fully examined. yµ (idµ - eAµ) ψ=mψ
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