How to reset a D3 - key no longer locks / unlocks doors

[Tiger15]

Hi, I have a D3 which was opened from the inside while locked. The alarm went off which was turned off by key but the doors no longer remotely lock / unlock. The manual says running the engine for 6 minutes will reset the system but this didn't work.

Has anyone came across this problem?

Thanks, Jason

[Rohan]

Hi, I have a D3 which was opened from the inside while locked. The alarm went off which was turned off by key but the doors no longer remotely lock / unlock. The manual says running the engine for 6 minutes will reset the system but this didn't work.

Has anyone came across this problem?

Thanks, Jason

Not 100% sure but a "hard reset" would probably do the job. Instructions are in the FAQs :) This seems to be the answer to most minor dramas.

[bbyer]

While you are playing around with the locks, make certain you have at least one window rolled down. When you have one window rolled down, now is also the time to find out if the manual door lock is frozen from lack of use or not.

The hard reset thing untangles most electronic fusses but rolling the window down keeps a minor locking concern from being a major problem.

[Tiger15]

Thanks for the tips. Having trouble finding the hard reset instructions. What is the technical term for resetting the system?

[bbyer]

Hard Reset Instructions

In brief, to start the hard reset process, open the hood but close all doors and let your 3 go to sleep - no radio display etc and no key in the ignition. This will take a couple of minutes and do not open any doors until the reset is completed. (I find that it is often a good idea to have the drivers door window rolled down and the key in my pocket whenever fooling about the vehicle.) Also when I play with a car battery, I remove any rings I have from my fingers; also my watch.

Disconnect the ground battery terminal from the main starting battery.
Disconnect the positive battery terminal from the main starting battery.

The reason for this order is if a wrench or loose battery cable ends grounds to the body, no arcing or other bad things happen.

(I assume that you only have one battery in your 3. If not, disconnect the others as well and leave them disconnected until after all is done.)

Connect the negative cable to the positive cable. (NOT the battery.) You will need a short length, (a foot or so), of light gauge, (14 to 18 gauge AWG, insulated stranded copper), wire to span between the battery cable ends as there is not enough slack in the positive and negative battery cables for the ends to touch each other.

Hold all together for about a minute or more, (at least two minutes), as you are discharging memory modules within the engine computer and elsewhere. Then it is suggested you then just let all sit disconnected for say ten minutes, (minimum five minutes), prior to commencing to put the battery cable ends back on the battery posts per the following order.

Reattach positive terminal to the main starting battery positive post.
Reattach negative terminal to the main starting battery negative post.

Start engine and hopefully no or fewer warning lights.
Reset time on the radio - note that the station presets are still there as not everything is erased. Nothing much else needs resetting either.

You can now connect up the other batteries if you have a multiple battery setup.

This is a link to a thread in disco3 re the hard reset procedure.
http://www.disco3.co.uk/forum/topic19547.html (http://www.disco3.co.uk/forum/topic19547.html)

This is a link to a thread on Disco3Club re the hard reset procedure.
http://www.disco3club.co.uk/phpbb/viewtopic.php?f=67&t=3374 (http://www.disco3club.co.uk/phpbb/viewtopic.php?f=67&t=3374)

[Tiger15]

Thanks Bbyer,
I'll try tomorrow and report back on the success.
Appreciate your help.
Jason