3rd Party Keyless Entry DIY (Why Not?)

[Smallblock454]

Originally Posted by dblhelixsf

Yep, definitely something to do with the fact that it's an M535.

I can unlock the driver door manually with the physical key but I have to put the key in the ignition within 10 seconds or the alarm goes off.

That is normal if you don't / can't use the keyfob to open the doors.

You have to turn the key in the doorlock to the right for approx. 10 secs and hold it there. Than turn the key left and the central locking system will open the car. Also the alarm system is deactivated.

You can try to resync the keys to get the original keyfobs to work again.

Regards, Markus

[particlewave]

Originally Posted by Smallblock454

That is normal if you don't / can't use the keyfob to open the doors.

You have to turn the key in the doorlock to the right for approx. 10 secs and hold it there. Than turn the key left and the central locking system will open the car. Also the alarm system is deactivated.

You can try to resync the keys to get the original keyfobs to work again.

Regards, Markus

Or you could just unlock normally and insert the key within 10 seconds...seems like this would be the easiest route in most cases.

[Smallblock454]

Originally Posted by particlewave

Or you could just unlock normally and insert the key within 10 seconds...seems like this would be the easiest route in most cases.

Difference is, that the alarm system is still activated, which leads to a lot of DTCs.

[dblhelixsf]

Originally Posted by particlewave

Or you could just unlock normally and insert the key within 10 seconds...seems like this would be the easiest route in most cases.

Thanks exactly what I have to do - unlocking with a physical key and inserting the key into the ignition within 10 seconds. Unfortunately, the remote doesn't unlock once the alarm arms. Only the interior lights light up.

None of the key resyncing procedures I've tried have worked...and I've tried all of them.

[Swhitcomb]

Originally Posted by dblhelixsf

Thanks exactly what I have to do - unlocking with a physical key and inserting the key into the ignition within 10 seconds. Unfortunately, the remote doesn't unlock once the alarm arms. Only the interior lights light up.

None of the key resyncing procedures I've tried have worked...and I've tried all of them.

This is exactly what mine does.

[dblhelixsf]

Originally Posted by Swhitcomb

This is exactly what mine does.

Sounds like its normal for our cars. Just wish one of us can figure a way around it.

[Smallblock454]

Originally Posted by dblhelixsf

Thanks exactly what I have to do - unlocking with a physical key and inserting the key into the ignition within 10 seconds. Unfortunately, the remote doesn't unlock once the alarm arms. Only the interior lights light up.

None of the key resyncing procedures I've tried have worked...and I've tried all of them.

Regards, Markus