A replacement door handle with correctly keyed VIN matched key can be purchased from the dealer.

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daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
No longer selling Cluster Needles Paint
No longer selling New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

With due respect. Would the keyed lock, labor costs be less than $50 plus 1/2 hr of your time? The lock wears out because it was in use almost every day for the last 26 years. The alternate way to fix it is to swap the keyed lock from Passenger side to Driver side as the P-side is rarely used since new. All modern cars with Keyless entry would NOT have this problem. You kill 2 birds with 1 stone.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.