Remote control on C180 does not work. We inserted new batteries and it works for some time (about 4 weeks), and then stops working again. Everything else works, so we have to use the key to lock/unlock the door manually. Replaced the batteries a 3/4 times and lasts only a few weeks. Any ideas?

SOURCE: 2001 Saab 9-5 Power Door Lock problem

Does the key still pop the trunk/hatch? That would also indicate whether or not it was the key remote. If that function works it's probably nothing on the car (i.e. "receiver") end.

There is a very good SAAB forum that would likely be the best place to find out if somebody has has this issue before and what they have done: www.saabcentral.com

SOURCE: programming keyless remote

2003-04 Mazda 6 REMOTE PROGRAMMING


Step 1: Open drivers door and leave open.

Step 2: Lock and unlock the driver’s door using the power door lock switch on the door.

Step 3: Insert key into the ignition.

Step 4: Turn key to on position and return to off position. (IMPORTANT - use ON position NOT ACC position). Do this 3 times within 10 seconds. Leave key in the ignition.

Step 5: Open and close the driver’s door 3 times. (Door should be left open after this step).

Step 6: ECU should respond by locking and unlocking the doors.

Step 7: Press any button on remote #1 twice. ECU responds by locking and unlocking the car doors.

Step 8: Press any button on remote #2 (etc.) twice. Each time the ECU will respond by locking & unlocking the doors.

Step 9: Remove the key from the ignition and the ECU will respond a final time with a series of door locks and unlocks. You're done!

Good Luck.

SOURCE: Ford F150 remote key does not work after car battery

Should not have happened,
For the Factory RKE ( Remote Keyless Entry ) have you tried reprogramming the key fobs to your truck. The procedure is in the owners manual ( need all of them at programming time ).
This is stored in NVR, and should not need to be done, but worth a try.

If this is an aftermarket Remote start / alarm, check the owners manual for t on battery replacement. Have seen some off brand with strange battery ( truck's battery that is ) replacement steps.

SOURCE: mk 4 golf, remote key not locking/unlokcikg doors?

unlock with key and hold key over for 30 secs(windows may go down)then lock with key and hold over for 30 secs(windows may go up)then press remote unlock button and hold for 30 secs,you have just reset system...the closer you have to get to the car for the remote to work the lower the battery power.sensor on top of dash(little black dimple)rarely,if at all, goes wrong.....