I have a 92 400E and two lights are out on the control buttons.
Anyone know how to replace the bulb?

First, unscrew the two screws holding the bottom of the wood panel over the climate control panel. They're right over the radio. Then carefully hinge the panel up and off. Remove the screws holding the climate control panel on (I think there are 2) and pull the panel toward the rear of the vehicle. You can then carefully take off the wires if you want to take the whole panel inside to work on it. There are 2 bulbs, one on each side. They are accessed from the front of the panel and are covered with black tape. Take the tape off and insert a piece of rubber or clear vinyl tubing -- experiment until you find one that's snug. Use it to unscrew the old bulbs and screw in the new ones.

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Steve
'93 400E

I would assume that the 300e would be the same as the 400e, I have the same problem and have been a little afraid to tackle it. Perhaps i will give it a go if it is that simple.

Should be the same. Good luck!

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Steve
'93 400E

Tha's an easy job, don't be afraid to tackle it.
The bulbs are deep into their sockets. You fingers will be too big to reach them. I used a piece of rubber tubing (vacuum tyoe of hose), about 4in. long.
Worked like a charm.
JackD

My pleasure. Glad it worked out!

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Steve
'93 400E

Thanks Steve worked like a charm
Joe