bmw wont start after disconnecting battery

Has me wondering. BST sensor is often confused with the intelligent battery sensor IBS which is mounted on the negative terminal.

How To Safely Disconnect Car Battery Rx Mechanic

Make sure your major grounds are goodstarting underneath the battery for the neg.

. Under the terminal under the hood too. Ad Solve BMW Repair Problems Fast w Help from Professional Mechanics Online. You can push start it if its manual.

Multiple repeat clicking with no start sounds like battery. How long did you have the battery disconnected for was it only a matter of minutes if it was disconnect the battery again this time leave it for about half an hour while its disconnected put your foot on the break pedal for about 30 secs or so to make sure the electrical system is completely drained then re connect the battery and try again have heard that if the. Symptoms of bad BST.

In desperation today I disconnected the negative terminal on the battery hoping it would reset it but stupidly left the car locked while I done it and the alarm went off. This is some sort of fuse that cuts your battery out in the event of a significant accident. If all you did was change a battery you should have no problem.

Battery was not sufficiently charged prior to install. Some research elsewhere showed a couple of cases where a key can be unlearnt by being left in the ignition as the battery discharges - we may have done this leaving the key in. You hooked it up backwards.

A problem BMW owners may face is that the car will not start after an accident. I tried everything to make it stop cycling the windows holding down for 5 10 15 20 seconds etc but to no avail. If that doesnt work I wonder if you messed up the BST connection on the red battery cable.

Do you have the old battery to try. A single click sounds like starter. Reconnected the negative terminal and now the car wont start.

This problem is often caused by the BMW Battery Safety Terminal BST sensor fault mounted on the positive terminal. Dont know how this could be blown unless. Loose or missed connection.

The fact that your old battery was just weak would start with a jump power the interior lights etc.

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