Hi all,
First post, so please be gentle!
I've had an '03 SLK320 from new that doesn't travel much - it's a weekend toy. Until about a year ago it was good as gold but then travelling up past Peterborough the car cut out on me. Totally dead battery. MB Assist rescued us and it turned out to be a defunct alternator regulator.
Over the past few months the battery seems to go sub 10v after two days of being in the garage. I jumped it from my other car and drove the 15 miles down to the dealer in Bedford. They ran a full battery test - all cells ok - and an alternator test - all ok. So the battery recharged fine on the run down there.
Seems I must have a large drain somewhere, so out with the multimeter. My parasitic drain seem a tad high at 112mA. My first thought was the radio playing up (as I've had in other cars) but minus fuses 5 and 8 the drain only dropped to 110mA. However, pulling fuse 9 dropped the rate to 33mA.
The fuse box contents says #9 is for roof light (which was turned off), horn, alarm and boot light (not fitted). Is there anything else?
I do have a trakker fitted and even although I'm not supposed to know where it is, I happen to know that the trigger is run against the fuel pump power line.
So my questions, what is the usual drain when sitting on a drive? Also, do trakkers also have a main power pickup somewhere to recharge its own battery or is it all run off the single feed from the fuel pump?
Thanks in advance.
'tang.
First post, so please be gentle!
I've had an '03 SLK320 from new that doesn't travel much - it's a weekend toy. Until about a year ago it was good as gold but then travelling up past Peterborough the car cut out on me. Totally dead battery. MB Assist rescued us and it turned out to be a defunct alternator regulator.
Over the past few months the battery seems to go sub 10v after two days of being in the garage. I jumped it from my other car and drove the 15 miles down to the dealer in Bedford. They ran a full battery test - all cells ok - and an alternator test - all ok. So the battery recharged fine on the run down there.
Seems I must have a large drain somewhere, so out with the multimeter. My parasitic drain seem a tad high at 112mA. My first thought was the radio playing up (as I've had in other cars) but minus fuses 5 and 8 the drain only dropped to 110mA. However, pulling fuse 9 dropped the rate to 33mA.
The fuse box contents says #9 is for roof light (which was turned off), horn, alarm and boot light (not fitted). Is there anything else?
I do have a trakker fitted and even although I'm not supposed to know where it is, I happen to know that the trigger is run against the fuel pump power line.
So my questions, what is the usual drain when sitting on a drive? Also, do trakkers also have a main power pickup somewhere to recharge its own battery or is it all run off the single feed from the fuel pump?
Thanks in advance.
'tang.