Registered 1997 SLK230 Kompressor
Ah, but it keeps you off the streets......
There should be zero current draw when your key is off unless you have a security system engaged......but that shouldn’t be enough to drain your battery. Did you have something aftermarket installed? Is the battery too weak only to start the vehicle? Does other accessories work in the mornings? A bad battery will not hold enough charge to start the vehicle even though it will power the accessories. It requires quite a bit of current for the starter that the battery may be too weak to supply. How long has this been going on? Weeks? Months? Days? Do you drive the car on a regular basis?Something I can't find in a manual is the current draw from the battery when the ignition is completely off.
I suspect I have an excessive current drain which is draining my battery overnight on an '03 R170 SLK. It is stock with no add-ons so current drain should be roughly the same as all other same models
When I disconnect the battery & put a 12V PS on the car leads I see a 1Amp draw quickly dropping to a steady 0.7A draw
This would seem to be excessive as it means a 70amp hour battery would delete in 100 hours. My battery is not drained overnight but depleted enough that car won't start. I reckon the Platinum Prestige Heavy Duty 3 year old battery is probably weak but before i change it any help would be appreciated as putting in a new battery is just a bandaid
Yea, the dehumidifier in the boot using something like a low current peltier dehumdifier was just an idea to use the spare 12V good? battery that I now have on hand?I've never heard of anybody using a dehumidifier in the boot. It's possible to keep the boot dry: replacing the seal around the center high stop lamp, cleaning and treating the seals, and ensuring the drains aren't clogged is usually enough from what I've seen. Keep in mind there is a drain under the spare tire that's supposed to keep water from accumulating there.
And don't forget the mod to invert the PSE (so that in case of flooding the circuit board isn't the first thing to go).