I'm at a loss.Why would the ESL function properly for locking but not unlocking. So now I'm thinking the key? It is older but functions properly with all locks/alarm/panic etc.and programming still works fine for locking drivers only or all 4 doors. Tried a few things to see if I could "trick it" into thinking the ESL was in open position, nothing worked. Doesnt unlock when key put in but locks when key pulled out(left off of steering column for testing). Took the circuit board out of the new(used) unit and replaced it with the original board from the original ESL. Found a used ESL and shipped it in($175CAN). Found the correct 203 motor on ebay but it was a 20-60 day ship time. Decided to clean up the motor as it was filthy but when cleaning the carbon brushes with a Q-tip they disintegrated. So in unlocked position I unhooked the battery and removed the ESL. The motor did not engage(no wirring motor noise) to unlock when key put in. W203 2002 C320.The key started not turning intermittently. Patman1 I have a question for you as you seem to know your stuff.
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