Ibartsimp wrote:

Ok, they are such good specialists that even the Range knew it
The boss put the key in the barrel and the car started immediatly (so he just told me on the phone)!
So he tells me that RRs can be bothered by interferences from TV antenas (the ones that broadcast) and it's true that my village has a big one... and sometimes moving just some hundred meters solves the issue.

Ever heard that?

He will now investigate on the battery drain. Will keep u posted.

Thx, how are the ground points identified?
Reg the FSR, is there a test to know it's dead?

Earth points: all brown wires, usually many together at these points:

Hi Joe, thx for the info. I'll check that. Reg the FSR, the only, maybe apparent symptom is battery drain.
News of the day : the car wasn't used at all yesterday and started like a charm this afternoon (at the garage). They will make alternator tests & others on thursday.

When my FSR went it was so hot after the car was parked for 4 hours it burned my technician, surprised the car didnt catch fire. One day your life will flash before your eyes......................................make sure yours is worth watching!

A way to test an FSR is to install an ammeter in the battery earth cable and measure the current drain after the car has gone to sleep and then do the same again having removed fuses 34 and 64.
The difference in the currents measured is the battery current drain thro the FSR.
If it's anything more than a few mA, you need a new FSR.
In operation FSR's generate a considerable amount of heat, hence the cooling rods attached to them. The heat is disipated thro the cooling rods into the inlet air stream for the ac blower fan.
If you operate an FSR without adequate cooling the body and fins will heat up to a temperature easily capable of causing a serious skin burn if held, not recommended.
I've come across them in other vehicles protected by thermal fuse's rated at 220C and seen them burn the thermal fuse out.

Thanks a lot for the info, I'll pass it to the garage (just in case)

Here's the update : got my car back today, and guess what, everything is ok (and has been for the full week). The test bookd didn't give anything
I will carefully look what's happening in the coming days and tell you and conduct the suggested tests when I have time.
Also, I was wondering if the fact that I parked it on a non flat area could consume battery during the night (with susp trying to compensate) ?

Flat battery again this morning grrr

tested it, 11.2v, does it mean it's definitely dead? or just that it needs to be recharged?
I still have to restart it to test (again, just in case) that the alternator is operating properly

No it's not dead just needs recharged.
The air suspension shouldn't affect anything, unless of course the compressor relay is sticking in the on position.

Ok, battery charged, battery is delivering only 14v whatever the rpms (2000, 3000), measured at the positive & negative battery terminations.
Tested on my fathers' 530d, it delivers 14.6.
Next ill do the tests mentioned above.
Wdyt

nicedayforit wrote:

A way to test an FSR is to install an ammeter in the battery earth cable and measure the current drain

If the battery is fully charged then thats about the same as mine. One day your life will flash before your eyes......................................make sure yours is worth watching!

ok, thx
@nicedayforit, can you give me more precisions about how to test the fsr (see above)?
Thanks