There are several prevailing schools of thought re: letting the car "go to sleep" before disconnecting the battery. I never concerned myself with it, never suffered any ill effects....YMMV.

 

best link, search button mobo jumbo ...granted this is a hypothetical thread.... IM not in any trouble... I just need to know

In keeping with the hypothetical nature of this thread, in the ... um ... er ... well, let's just say I found this link 'somewhere' ... which discusses how 'best' to disconnect the battery to prevent something called the 'BMW transport mode' from kicking in:

- How to disconnect the battery to prevent the 16-minute BMW transport mode from disabling the remote key and other items (1)

 

Burning2nd, if you wait the 16 min the only thing that will happen is your clock will have to be reset and I think the trip odometer will reset back to 0.
Even if you don't wait 16 min you will probably be OK.
You can connect a battery tender under the hood when you disconnect the battery but you should make sure all of the interior lights are off so the current draw on the Tender isn't more than it can supply. If you use a Tender make sure the positive battery cable doesn't touch ground, as it will have 12 volts (fron the Tendor) on it.

 

Wow that's a rambling question. But since you're a fellow E39/E36 owner, will share my experiences.

I transferred the battery disconnect I had on my 530 to my M5. The way these cars drain batteries, I need the peace of mind. As you probably know already, you can gain a few more days by not engaging security system and locking the car manually.

The only "memory loss" thing I know of is for the E36, it's a 9 volt you plug into the cig lighter to prevent losing the radio codes. That doesn't happen in the E39, usually I only lose date and time.

However, recently when the car was disconnected for over a week, I also lost radio presets. No ill effects noticed so far. The only variable besides the length of time? I waited for the car to go to sleep, instead of doing it right away.

 

I don't understand why following the instructions in your owners manual is an issue if you don't have onBoard Nav?

And I haven't been sold yet on this mysterious "transport mode" issue. More than likely...who ever started this rumor is actually referring to the "ASSEMBLY LINE" mode. But once the control module is coded with the car's ZCS coding...that mode is cancelled.

The "transport mode" is used on bimmers that have self leveling systems...so again...I'm skeptical about this rumor that disconnecting the battery causes the car to revert. (see info below)

*************************************************

 

I haven't been sold yet on this mysterious "transport mode" issue.

Me neither ... but what do I know.

The 'only' thing I know is that I have a problematic DICE Silverline, so, I must have disconnected my battery a hundred times.

And, I never once waited 16 minutes.

Anyway, since Saint Q's information was so, ummm, uh, er ... so Saintly ... I just added it to that other link for cross reference.

Here is the disconnect procedure recommended by Tom for the DICE Silverline in the BMW:

Note 1: A full battery reset procedure is as follows:
1. Disconnect the iPod from the DICE interface cable
2. Remove the negative battery cable with a 10mm socket wrench
3. Remove the positive battery cable with a 10mm socket wrench
4. Touch battery cable terminals together (away from battery) for about 5 seconds (a small spark is normal as this is stored power draining from the system); on the E39, short with your wrench because the cables do not reach each other otherwise.
5. Allow cables to remain disconnected for about 5-7 minutes
6. Reconnect the positive battery cable
7. Reconnect the negative battery cable
8. Reboot most iPods by pressing on MENU & CENTER buttons for about 5 seconds and then reconnecting to the DICE cable after the reboot process is completed. Reboot of iPod touch & iPhone, which don't have buttons, is a different procedure (please advise so we can write that here for others).

 

negative then positive.

 

so none of you know of "throttle adaptation "?

 

You are referring to the dual pot that connects to the gas pedal and the pot inside the throttle body (tu drive by wire) that the DME uses for comparision?

 

On audi and vw when u loose power to the car the throttle has to be ran thur its full limit or travel so it can figure out where it is. BMW doesn't do this ?

 

I updated the bestlinks for this topic today:
- What is the correct BMW battery reset procedure (1) & what is the battery disconnect 16-minute timeout sleep warning (1) & where to find the Battery Safety Terminal BST explosive charge emergency quick disconnect (1)

 

Thanks Blue Bee ,,,, you are by far the best user friend to all of us in need. With your support and direction you have made this forum one if not the BEST BMW user friendly forum around today.




Treat your E39 with respect and Run It Hard !!! every chance you get.

 

Yes you deffinately have to put garlic on the battery to aboid any ill effects. Also I hear from my friends in Louisianna that sprinkling brick dust around the edges of the battery will prevent ill effects.

 

wow bringing back the old thread.. when the hell did i right this? lol

 

You didn't "right" anything! :rofl::rofl::rofl:

 

Right lol


Sent from BimmerApp mobile app

 

I can't tell when t he post date was. All I know is it was on the front page and I checked up on it.m and saw people being silly. So it seemed fun.

 

right,