Key Off current.

[Petrus]

The W30 being a modern electronics era car, there is boúnd to be not a real óff. I mean turn the key off and there will still be some electronics using e-power.
How much key-off current is the MR using? Anyone know or measured it?

[james_ly]

Really not much electronics in these cars as far as I know... clock, alarm etc.

[shnazzle]

Clock, alarm, radio,ecu.

[Petrus]

Really not much electronics in these cars as far as I know... clock, alarm etc.

Even íf the ´etc.´ would be nothing, then the clock and alarm are users. This can be a negligeble current, but then it could be enough to drain a half old battery in winter in a forthnight, or a tiny lighweight one in a week.

[SuperArt]

I bring my battery indoors during the winter months and trickle charge it. I put it back in the car once every two weeks just to be able to start the car and have it idle for a bit. The alarm does drain the battery fairly quickly which is surprising as the battery is not small.

[Chilli Girl]

I'm fortunate as I have a locked garage so whilst Foxy was resting in the garage for 5 weeks, she was unlocked, that way the alarm/immobiliser wasn't activated. If it had been I'm damn sure she wouldn't have started as I hadn't used a trickle charger either. :withstupid:

[H1GRM]

Anyone fitted an isolating switch? Might be good as an extra security measure as well.

Been thinking about it but not sure were to start.

Greg 

[Topdownman]

I have bought one of those battery terminals with the isolating knob that you unscrew. Not had time to look at trying to fit it though!

You can lock the car with the battery disconnected, just do the passenger side from inside and then use the key on the drivers door. Probably better from an insurance point of view if it got stolen that it was locked.

[Joesson]

I'm not sure about that Simon-
Isolating the battery to prevent battery drain while storing the car in a secure, locked garage makes sense, avoiding the need for trickle charging. But- if other than in a locked garage- The 2 has a car immobiliser requiring power to operate. I suggest that disconnecting the battery, and making the OE immobiliser inoperative, would not be considered by an Insurance Company as "extra security".

[Topdownman]

Ah, I only meant it was better to have it locked in the garage with the battery disconnected rather than unlocked. I am not advocating disconnecting the battery. I have bought the isolator to save me having to disconnect a terminal to work on certain jobs.

If you happened to be charging the battery off the car when it was stolen then thats probably OK but disabling the security could be an issue?

[Joesson]

That all makes sense now Simon.