Keyless remote of C200

Sounds like the contacts in the buttons are not making contact.. you may want to try taking the remote apart and cleaning the contacts and seeing what happens. If the remote is truely dead you may need a new remote

1. Start with the key out of the ignition, drivers door is open all others closed and
drivers door is unlocked.
2. Perform these steps within 5 seconds.
A. Insert the key into the ignition and Pull key out twice (Do NOT Turn)


3. Perform these steps within 40 seconds.
A. Close then open the drivers door twice.
B. Insert the key into the ignition(Do NOT Turn) Pull key out.
4. Perform these steps within 40 seconds.
A. Close then open the drivers door twice.
B. Insert the key into ignition and leave it in ignition.
C. Close the drivers door.
D. Turn the ignition to ON (Do NOT Start) then back to OFF.
E. Remove the key from the ignition.
5. Within 3 seconds, the power door locks should lock then unlock automatically
indicating successful entry into programming mode.
Return to step 1 if the locks do not cycle at this point.
6. Perform these steps within 40 seconds.
A. Press the lock and unlock buttons on the remtoe simutaneously for 1.5 seconds.
B. Immediately after letting go of the lock and unlock buttons,
Press the lock button by itself and hold for 2 seconds. Within 3 seconds, the door
locks should lock and then unlock once indicating successful programming. If
the door locks cycle twice, repeat steps A and B in step 6 as the remote was
not accepted.
C. Repeat steps A and B in step 6 for each new remote.
7. Open drivers door.

Silly question, have you tried to replace the battery in the remote? Sounds like it's getting weaker and weaker. worth a shot.

Replace battery very expensive to get new one they are button batterys get hi power ones

Hi,
The light for the keyless remote fob stays on? If so the battery may need replaced.

Here is link to a remote - LINK.IF this is yours get a battery @ your grocery store.

-open the key fob w/a flat screwdriver
-note the battery's position - is the '+' or the '-' visible?
-replace the batter the same way
-snap the cover back on

To reprogram (should also be in the Owner's manual):

1. Start with the key out of the ignition, drivers door is open all others closed and
drivers door is unlocked.

2. Perform these steps within 5 seconds.
A. Insert the key into the ignition(Do NOT Turn) Pull key out.
B. Insert the key into the ignition(Do NOT Turn) Pull key out.

3. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Insert the key into the ignition(Do NOT Turn) Pull key out.

4. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Close the drivers door
D. Insert the key into ignition and leave it in ignition.
E. Turn the ignition to ON (Do NOT Start) then back to OFF.
F. Remove the key from the ignition.

5. Within 3 seconds, the power door locks should lock then unlock automatically
indicating successful entry into programming mode.
Return to step 1 if the locks do not cycle at this point.

6. Perform these steps within 40 seconds.
A. Press the lock and unlock buttons on the remtoe simutaneously for 1.5 seconds.
B. Immediately after letting go of the lock and unlock buttons,
Press the lock button by itself and hold for 2 seconds. Within 3 seconds, the door
locks should lock and then unlock once indicating successful programming. If
the door locks cycle twice, repeat steps A and B in step 6 as the remote was
not accepted.
C. Repeat steps A and B in step 6 for each new remote.

7. Open drivers door.

hi
Chance are the driver side control module is not working.
Open the driver side, inner door panel and check

The transponder is not effective any longer sometimes the battery of the remote is very low which needs to be replaced

Open the remotes up...Are the boards the same...?

I had the same problem and located the addendum to the owners manual. It's kind of overcomplicated it seems. Here is what it says:
1) Confirm all doors are closed and the key is out of the ignition.
2) Open the driver's door and put the key in the ignition within 10 seconds.
3) Remove the key within 10 seconds.
4) Push and release the driver's door switch 3 times within 20 seconds.
5) Insert the ingition key within 10 seconds.
6) remove the ignition key within 10 seconds
7) press and hold both "lock" and "unlock" on the transmitter for more than 5 seconds within 20 seconds of removing the key All doors will lock/unlock to confirm the process has been properly done.
8) Press "lock" or "unlock" on the transmitter within 5 seconds of completing step 7. All the doors will lock/unlock to confirm that the process was properly done.
At this point the transmitter has been properly programmed.

Of course, this didn't help me. My transmitter still does not work. I did confirm the procedure with a known good transmitter, so it is valid. If the lock/unlock does not happen in step 7, you more than likely have a bad transmitter.

Lock all the doors from the inside (with all the doors closed), unlock your driver's door by manually lifting the lock, then press it back down after you are out - this will prevent the alarm from sounding when you use the key to unlock the door.