Ok, what am I missing????? (coach battery)

[JimHs1]

Was in the Sunseeker the other day trying to ID the central dash display. Turned the key to accessory several times. Always removed the key when done. No, interior lights on. Finished up and went to the house. Went back out today and the coach battery was dead. Am charging it now, but what could have discharged the engine battery?

[kenandterry]

I can’t remember what vehicle I had, but......

There was a “sloppy” ignition on one of my previous vehicles (or it may have been a work vehicle) where, even though you could remove the key, there was still some ignition circuits alive that would kill the battery.

Just sayin’

You might want to check yours.

[JimHs1]

Originally Posted by kenandterry

I can’t remember what vehicle I had, but......

There was a “sloppy” ignition on one of my previous vehicles (or it may have been a work vehicle) where, even though you could remove the key, there was still some ignition circuits alive that would kill the battery.

Just sayin’

You might want to check yours.

Ignition is brand new and very tight, so I really don't suspect it. Thanks for the thought!

[backdoctor]

I've had this occur a couple of times on my 2014 chassis sprinter 3500 (Solera). One time we had to have it towed to the dealer. They said it was a "code" but there was nothing happening on the dash or anything else. I had checked the battery for charge and it was fine.

They cleared the codes and away it went.

The second time, I started the generator and that caused a voltage change enough to change the ignition system and it started. But this time there was any code, or should I say several pages of codes. All for low voltage. It turns out there was a loose connection on the battery cable running from the coach to the chassis batteries and that was arcing. This caused low voltage at the ignition and the key switch wouldn't do anything till I started the generator and raised the voltage enough to power it... Weird eh?