I have an ML320/2003,if I have access (unlock) the car with the car via the remote,it unlocks but the inner lights wont light up even when I light up it manually,it still don't come up.

Sounds like either the key fob needs to be reprogramed or your remote locking system needs to be reset. Check with the manufacturer or dealer where you bought the car if they have the directions for resetting the system.

hi'

i think the wire that connects to the door trigger for the interior light

a negative or a positive one has been mixed up

if its neg change it to the positive one

if its positive change it for the negative one

the purple or green wire

cheers

Try this trick, push the lock button once your in the car to unlock first then lock then unlock again, your kill switch is activated as anyone could unlock the door with a key, but to be linked together via bluetooth remote is exclusive and good practice if you choose to stop a thief

yes..go have your codes read at your auto parts store ..they can reset this free

the arm that runs inside the inner door panel has come off the lock/unlock slide inside, remove the inner door panel and look for a solid wire thats come unattached in the door,

have you tried the spare key..usually the red light comes on even when the battery for the remote is low.you can tell when the battery is low as you have to get nearer the car to unlock it.....

Check the unlock mechanism for the hatch. These are controlled by an electrical motor pulling a cable. If the cable came loose you might or might not hear the click click that it makes. I would also check the fuses and relays related to the system. Usually if you can get the interior panel off all the innards are exposed. I would suggest pulling that panel off, then triggering the keyless remote and see if anything moves, that might pinpoint where it has gone bad.

the alarm is in valet mode .open a door press lock unlock lock on the remote and it should take it out of valet mode

need to program a new remote to keyless entry system it is crimestoppper cs835 rke

try putting key in ignition turn to on position
then press lock & unlock several times slowly if door locks cycle up & down after 1st press it lost code and is now resynconised.
now try remote with all doors closed and key out of ignition
if this dont work need to register key(program)back into system which dealer must do with Tech2 if round heart shapped remote