Have a 2014 L494 Sport
Have an odd fault the battery goes flat after 3 days . Its a new AGM battery and it has been registered too the car
After 20 mins the drain is 15 -38 mili amps all good well NO after about an hour there is a relay click in the offside rear fuse box area which i have traced to the handbrake ECU
This results in a drain of 2.6 Amps once this starts happening it is a cycle every 3/5 mins
There are no faults stored in the car
Handbrake functions perfectly
Ideas please