'89 300E no heat out of passenger side

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Thom - 04 Dec 2005 18:05 GMT

Hello all.

I have an interesting problem. I have noticed that my car (89 300E) no
longer blows heat out of any passenger side vent EXCEPT for a small
amount out of the defroster and the vent by the door. Are there
separate flaps for each side of the vehicles ventilation?

Thanks,

Thom

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surfside - 04 Dec 2005 18:58 GMT

Be sure that the thumbwheels are in the open position. Other then
that, I'm told that there is a control unit that opens and closes the
air blend doors. To replace the unit requires that the dash be
disassembled. A difficult job.

Please let me know how you make out. I have a 95 420E with heater
problems.

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Thom - 05 Dec 2005 20:06 GMT

The vents are open. Air flows out of the defroster and outermost vent
fine, and out of the drivers side frion and rear footwell vents, just
no airflow in the front or rear passenger footwells.

Unfortunately, it is 21 degree's outside. With no garage, it will be
at least a week before I can look at it, I like to work in at least 30
degree weather.

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