Hi guys
Gonna sound dumb but can you clean the brake fluid reservoir multi plug with wd40?
handbrake light stays on with no tcs light coming on and the occasional air bag flash. Car doesn't have ABS as far as i know but there is a ford approved fuse for ABS in engine bay so very confused! No ABS light has ever come on.
Changed handbrake switch so its deffo not that and when you wiggle multi plug it dims a little. Its not the brake fluid level either or the braking system.
This all started to happen the instant when my front spring went. It did fix itself for months then started again.
Any suggestions?

Thanks