Parasitic draw

Check for water intrusion in the FRM module in the drivers side kick panel, this is a common issue for electrical issues.

Thanks, I opened up the BCM/ZKE and it looked to be ok. With it disconnected the draw was gone but a lot of things report to that module. Doesn't mean it's not bad.

Hi Eric: Don't know if this will help but I found it very illuminating. diag​.​net/msg/m2gyzegyyw… Guido

That's an interesting post for sure. This vehicle does have an aftermarket radio but the K-bus wire has been cut and wrapped. I don't have any communication issues that I know of, the vehicle just won't go to sleep. Thanks.

I stopped reading at module..under the carpet..on a European vehicle, lol..good luck in your findings.

I don't even work on Euro, Michael, but even I have seen multiple videos from the Northeast stating, "just find the water (on Euro) and you will find the problem." :-) Still the initial question remains. There is whole bunch of "shut down sequence" information missing from all makes and models SI. I suspect factory training covers the info.

Yea I wish SI had more on description and operation for sure.

Hi Geoff: The service information resides in the "tool". M-B is the same, in that respect. HTH, Guido

Yeah, for Mercedes, and BMW, I was saying in general. Many, many "Help" requests about parasitic draw, I have read, pose the never answered question of "who tells whom to be awake... or even not awake?". As luck would have it, I just found some for a 2020 Corvette though; "The powertrain CAN bus communicates over a dedicated circuit but the other CAN buses use a wake-up message from the…

Just read that article. Thanks for the link. So I guess Snap On will be up to speed on that by it's 35.4 update. Autel probably already has it.

and by 2036 the SO will cost $50,000 and the Autel will cost $50.00

Thanks, I don't know if I have any under-carpet modules. The K-bus splice is under the carpet, the BCM/ZKE is up a bit.

This is a little shotgun approach-y, but if it has an RDC module, I’d start by disconnecting that and see if you have a change. Notorious module for messing with the K-can. To answer your question about assigned seating at the K-can splice, at no point have I ever seen pin info (factory info or otherwise) for those combs. It’s come up once at a training class, and the answer then was to just…

I didn't see an RDC in the autoscan. Doesn't mean there isn't one since I'm using aftermarket scanners. I'll look into it back at the shop. Appreciate the insight on the K-line splice.

Does it have aluminum valve stems? If yes, and the RDC’s not checking in on the auto scan, then it’s definitely suspect. We stock those modules... Edit: pardon my target fixation, your car is a little early for the RDC’s that fail all the time.

Does it recognize the rear hatch is closed?

Have you tried using an infrared camera to find your parasitic draw? I like to park the car in the shop with the windows down and hood open over night. Put a trickle charger on the battery to keep it charged. Come back in the morning and use the camera to check for heat sources. Have found many a source of drains this way very quickly. Last one I found was a rear heater control panel on an…

Open all doors and shut all door light switches, let set over night use infrared camera to see which module is warm

I do not mean to sound rude. But Why are you using an aftermarket scanner on a mini/BMW? For $30 and a Jbox you can have a factory scantool and factory service information. I am sure it would be an easy sell to the customer instead if hours h=guessing you have the right info. I do not recommend programming the modules with the Jbox but the factory scan tool and the service information are…

Had a similar problem with a mini just last week Turned out that although it didn’t have a cd changer the k-line wiring was fitted from factory in the boot taped to a loom and had water ingress in the connection keeping the general module awake