L454 Handbrake

Author
Discussion

broncoupe

Original Poster:

157 posts

233 months

Tuesday 14th April 2020
quotequote all
Have a 2015 Sport
The battery went flat found i had a drain about 300-500 ma
More importantly i have a cyclic clicking every 3 minutes approx from the handbrake ECU
This is with engine off all closed up Alarm ON or OFF and my ear to the rear panel panel near OSR light
So im assuming the 2 are linked
Any help please

Shanksy87

381 posts

129 months

Thursday 16th April 2020
quotequote all
The OSR area houses a bunch of relays.

The noise near the handbrake is harder to guess, if it was a FFRR I would have said gear selector, not so sure with the sport.

The issue is likely to be a control unit not shutting down. A dealer should be able to trace which one is causing the current draw.

broncoupe

Original Poster:

157 posts

233 months

Saturday 18th April 2020
quotequote all
unfortunatly they are closed UFN
Why i was trying to find it

Shanksy87

381 posts

129 months

Saturday 18th April 2020
quotequote all
You could try to diagnose by working out which relay is clicking, or by locating the circuit which is causing the drain using a current clamp. However I suspect when you find this you'll be into a world of guessing which element in the chain is the issue.

As a quick fix I would disconnect the battery for 10 minutes in the hope this resets whatever has gone rogue on you.

broncoupe

Original Poster:

157 posts

233 months

Sunday 19th April 2020
quotequote all
Done all that
3 amp draw
Had the car checked on Autologic showing no faults
The clicking seems to be Handbrake ECU but it doesn,t effect current draw if you disconnect
Probaby a consequence rather than the fault