BMW X6 E71 electronics parking brake problem

[evisdaci]

Hello everybody
I have a problem with EPB (electronics parking brake)on BMW X6. The parking brake work fine but when i turn off the car and leave it in parking after 30 minutes ore 1 hour start a sound CLICK CLICK on the back of my car. I find this sound come from EPB control module. I open this module and everything looks fine. I tested the blue relay and it is OK but some time as i said before i heard a sound and this sound is from this blue relay.
Have anyone same problem as me and how did solve it ?

[autoden]

This could be a faulty battery Get it tested under load.

[evisdaci]

I think you have right because i put on the car battery charger for more than 2 hours and the EPB didn't have problem. And i measure the current flow with multimeter and i see the current drain about 2.85 A. Next day when i go to start the car it won't start because battery is discharged. I put the new battery and i see again current drain. I have same opinion like you, my problem is with current drain that caused problem in EPB module

[Meat-Head]

ON TOPIC AND ADVERTISING FEATURE:-

EPB. you park the car, brake comes on, the epb ecu thinks “buzzz thats 10 KN FORCE”

then just before the bcm shuts down epb thinks “it took 10 kn force, been 15 mins, disc cools and shrunk, ill give it another tug BUZZZ another 5kn - drivers a dick, that will do”

then bcm shuts dooon network