have been very busy last weeks and as my 540i is not my daily driver, it has been staying in garage for laike 10 days. Tonight i was going to have a ride and after backing it out and left idleing, i noticed interesting ticking sound, i've never heard before.
It sounds like hot exhaust pipe, not metal clicking against metal. Did not notice any irregularities in idleing though. Decided not to drive the car tonight to the meeting and drove it back to garage, where i noticed the headlights and gauge cluster going lighter as i pressed the gas petal.
I don't have time to go to service for a while but would prefer not to have sleepless night until i get there.
Might there be something with alternator or charging?