On the 126, old tow truck guy used a plastic wedge on the rear window glass and hooked a noose on the end of a long stiff wire to the front door inner handle and opened it in 30 seconds. Hope you have a similarly talented type nearby.
Don't know if the 124 offers the same access.

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The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)