1992 300D with 232,000 miles. Lately there've been instances of the center vent not opening. But thus far it eventually works. Today, for example, I couldn't get it to open on a 20 minute drive. But I turned on the car five hours later and the center vent popped open.

So I figure that vacuum actuator is on its last legs. With it opened, is there some easy way I can force it to stay open all the time? I'm as much into the compulsive need to make everything in my car work as the next guy....but there's not a chance I'm ripping apart the dash (in my case, PAYING someone to do it) just to have a working center vent.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles
06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 70k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife