Disconnect the negative battery cable.
If equipped, remove the Vehicle Control Module (VCM) from the engine compartment.
Remove the coolant recovery reservoir.
Disconnect the blower motor cooling tube.
Unplug the electrical connector(s) from the blower motor, as necessary.
Remove the blower motor-to-case screws (the lower screw is on the bottom front of the cover).
Disconnect the harness from the blower motor.
Use a razor or utility knife to cut through the cover on the cut line as neatly as possible because the access cover has to be reinstalled.
Starting with upper half of the cover, tear the remaining part of the access cover from the remaining portion. Then remove the lower half of the cover in the same manner.
Remove the blower motor assembly.
To install:
Install the blower motor assembly.
Connect the two halves of the access cover together using the three flange clips.
Using black Duct Tape, place a piece of the tape along the bottom lower edge of the lower half of the lower cover only. The tape has to be the full width of the cover.
Install the access cover onto the case.
Install the screw and align the cut areas.
Seal the cut areas using black weatherstrip adhesive. Do not use RTV to seal the assembly. The weatherstrip adhesive bead should be as straight as possible to ensure a neat and professional finish to the cover. Allow the adhesive to set at least 15 minutes until it skins over.
Attach the electrical connections.
Attach the cooling tube and install the coolant recovery reservoir.
If removed, install the VCM.
Connect the negative battery cable and refill the coolant reservoir to the proper level.
The blower motor resister block is located in the center of the dash. Remove the complete glovebox and look to the left and you will see it...............
Blown fuse? Bad blower motor? Bad blower motor resistor? Bad blower motor switch?
On the passenger side under the dash is the blower motor held in with 3 small screws. First unplug the wire harness to the blower and remove the 3 screws. Installation is in the reverse order
Its under the winshield wiper assembly
Probably the blower motor resistor, check blower motor at the same time
the impeller are the fan blades themselves.
Blown fuse? Bad switch?
You most likely blew a fuse and have a bad blower motor resistor assembly
Blower MotorRemoval & InstallationWith Air Conditioning1. Disconnect the battery ground.> On trucks built for sale in California, remove the emission module located in front of the blower.2. Disconnect the blower motor wiring at the blower.3. Disconnect the cooling tube at the blower.4. Remove the 4 mounting screws and pull the motor from the housing.To Install5. Remove the clamp from the blower case and remove the blower cage.Mount the cage on the replacement motor.6. Install the blower motor and tighten the 4 mounting screws.7. Connect the cooling tube and wiring hardness.8. Connect the negative battery cable. Check the blower motor for proper operation.9. Cement the cooling tube on the nipple at the housing using Liquid Butyl SealerD9AZ-19554-A, or equivalent._______________________________________________________________Blower Motor ResistorRaise your hood. Look at Right Hand back firewall. (Passenger side)You can see the rear of blower motor.Look beside it there is a plug (I believe to the bottom right)The small rectangle assembly under that plug is your resistor block.Remove the 2 bolts that hold it to the firewall and pull it out.Reverse procedure to reinstall.Then you will be cooking -w- heat again
Does blower motor run?
Hummm!! it Seems it is a known problem with Mercedes from 94 to 98. Is two problemsThe blower motor resistor can be defective andthe blower motor itself.
On '94 its behind motor under dash on passenger side Passenger side on the bottom of the heater box. You will see a plug with 5 wires on it. Thats the resistor remove the two screws that secure to the heater box and remove it.