Starter Battery Drain; How to stop ECU's etc from consuming battery when door opens?

[Tenac]

So I did some testing on mine. If you leave it unlocked and do NOT move the key in anyway but open the door no lights at all come on. I left door open and there was no drain on the batter for 4 hrs. If I wake the key up lights come on and I do see battery drain.

Forgot to add let the car go into sleep and the battery sit without moving for more than 1 min 39 secs.

 

[HereinDaRockies]

So I did some testing on mine. If you leave it unlocked and do NOT move the key in anyway but open the door no lights at all come on. I left door open and there was no drain on the batter for 4 hrs. If I wake the key up lights come on and I do see battery drain.

Forgot to add let the car go into sleep and the battery sit without moving for more than 1 min 39 secs.

Huh? Key fob has an accelerometer?

 

[NC_Mike]

Huh? Key fob has an accelerometer?

That's an interesting question. I was out messing around in my driveway yesterday, locked my vehicle with the double tap to turn off the white/amber exterior lights. Walked away for a few minutes and picked up my key and noticed as soon as I moved it the lights came back on. I literally looked down at my key and said "what the hell" to myself.

 

[landmannnn]

So I did some testing on mine. If you leave it unlocked and do NOT move the key in anyway but open the door no lights at all come on. I left door open and there was no drain on the batter for 4 hrs. If I wake the key up lights come on and I do see battery drain.

Forgot to add let the car go into sleep and the battery sit without moving for more than 1 min 39 secs.

That's an interesting question. I was out messing around in my driveway yesterday, locked my vehicle with the double tap to turn off the white/amber exterior lights. Walked away for a few minutes and picked up my key and noticed as soon as I moved it the lights came back on. I literally looked down at my key and said "what the hell" to myself.

I have noticed this too. Leave the vehicle unlocked, walk past with the key and it lights up the driver information part of the infotainment system.

 

[TCMColorado]

Hmm.....maybe a small Faraday bag could be used for the key to reduce battery draw down.

 

[Voader - Oudersopzwier]

Maybe the answer is to just defeat the "door is open" switch. Mechanically or electrically.

i.e. let the truck think its doors are always closed, even when they're open

Bonus advantage: you could do slow speed manoeuvres while hanging out the driver's door so you can see where your line or tires are at. (For now, the truck dumps its transmission back into "P" when I'm rolling backwards slowly in "R" and then open the door to see where I'm at. )

Not if you activate off road then you can open the doors and drive along

 

[landmannnn]

Hmm.....maybe a small Faraday bag could be used for the key to reduce battery draw down.

Good thinking

 

[DenisM]

I have noticed this too. Leave the vehicle unlocked, walk past with the key and it lights up the driver information part of the infotainment system.

Similar issue with Subaru Impreza... walk near it with key in pocket and it's suddenly wide awake ... a foil envelope over the key fob was the answer

 

[Clark Kent]

Similar issue with Subaru Impreza... walk near it with key in pocket and it's suddenly wide awake ... a foil envelope over the key fob was the answer

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