My 2002 c320 electric steering lock was making funny noises, so I decided to change it before it quit altogether. For the last month the lock chatters when it is locked or unlocked, in the past it was always one smooth continuous sound. And some days it chatters differently than other days.

Online EPC showed the original lock was a 203 462 06 30, and it was superseded by a 203 462 09 30. The factory replacement part appears identical to the original.

So I followed the WIS instructions which were:
1. Insert key and turn to position 1
2. Disconnect battery ground
3. remove kick panel, turn special locking bolt 1/2 turn and remove bolt
4. remove electric steering lock and disconnect cable

Reassembly was reverse.

Everything came apart and went together smoothly. After reconnecting the battery, I turned the key from "1" to "0" and removed it, expecting to hear the new lock drive to a "steering locked" position. I heard nothing. When I insert the key I hear nothing, and the key will not turn from position 0. The steering wheel is NOT locked.

I've checked that the connector is properly seated on the lock. I'm reluctant to try swapping back the old lock because I can't follow step 1 above, so I'm worried I'll make things worse (things are bad now, but I'll bet they could get worse!).

Any helpful suggestions? My pride is really taking a beating on this one. Thanks.
(Car has 105k miles)

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2001 e320 wagon
2004 F350
2006 Crown Vic