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Old 16-11-15, 01:58 PM   #1
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Default BSI reset puzzle

A BSI reset according to BBA Reman requires turning all lights, etc off so that
the BSI is taken to Sleep mode or Active Economy mode, during which nothing in the vehicle should be operating. After waiting 3 minutes the battery can then be disconnected.

However, my 407 2.7hdi coupe 2007 has the battery inside the boot. The boot compartment has a boot light and a "boot open" sensor.

So, how do I disconnect the battery without "waking up" the BSI?

That's not a trick question. Please help: I'm desperate. Thank you.
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Old 16-11-15, 03:03 PM   #2
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Quote:
Originally Posted by chrisnelson View Post
A BSI reset according to BBA Reman requires turning all lights, etc off so that
the BSI is taken to Sleep mode or Active Economy mode, during which nothing in the vehicle should be operating. After waiting 3 minutes the battery can then be disconnected.

However, my 407 2.7hdi coupe 2007 has the battery inside the boot. The boot compartment has a boot light and a "boot open" sensor.

So, how do I disconnect the battery without "waking up" the BSI?

That's not a trick question. Please help: I'm desperate. Thank you.
why not open the boot and put a screwdriver in the lock to lock it, the switch it most likely in the lock
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Old 16-11-15, 04:12 PM   #3
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People put too much effort into the bsi reset procedure it does not need to be done EXACTLY as long as the car is woken up properly it will reboot fine

No need for having someone sitting in the car because you cant wind window down and all that bollox

Leave your boot open for 3 mins the light will go out then disconnect the battery!
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Old 17-11-15, 08:57 AM   #4
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Thank you so much. I shall put your advice into action today (weather permitting!)
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Old 17-11-15, 08:59 AM   #5
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Thanks for the screwdriver tip which I shall try today.
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Old 18-11-15, 12:22 PM   #6
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Leave your boot open for 3 mins the light will go out

I tried this - waited for 10 minutes - boot light didn't go out. Therefore, I assume the system didn't go into sleep mode so I left the battery alone.

put a screwdriver in the lock to lock it

tried this too - it didn't work.

Anybody else out there who can help with this problem?
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Old 18-11-15, 04:07 PM   #7
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If the boot lock does not control the light then there must be another switch somewhere to control it i am surprised it does not go to sleep anyway though most modern cars do indeed go to sleep anyway with light current draws
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Old 18-11-15, 04:26 PM   #8
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Slacken the earth connector off the battery but do not remove. Close boot lid down. Climb into car, shut door behind you, fold rear seats down, climb into boot, remove the slackened cable off the battery then wait a few minutes for the BSi to go to sleep, use the emergency method to open the boot (see handbook), then pop yourself out of the car, Hey Presto. BSi is safely asleep.
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Old 18-11-15, 05:04 PM   #9
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Thank you for an ingenious solution but I do have a couple of questions (1) why is it necessary to slacken the earth cable before closing the boot lid? Also, why should the seats be folded after the bin lid has been closed?
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Old 18-11-15, 06:30 PM   #10
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cable slackened before you close the boot makes it easier to get off as 1. its going to be a tight squeeze and you will need to get your arms in obscure angles whilst in the boot trying to use a spanner or socket, 2. its going to be dark, 3. there aint much room in the battery compartment.

Fold the seats when ever you want, doesnt make a difference to the BSi Reset procedure, but dont forget, on the coupe the seats may be locked and you need to use your ignition key to unlock them.
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