My software doesnt list the S420, but for a 420SEL- Remove the knob, then remove the bulb and nut, push shaft through panel, remove lower instrument panel cover. Unplug the switch and plug the new one in and reverse procedure for install
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Saturday, February 23rd, 2008 AT 7:20 AM
MERLIN2021
MECHANIC
17,250 POSTS
Also remove the neg(-) Battery cable for 20 minutes before beginning work, this is to dissable air bags, retrieve radio codes first, if required...