I need some help with a heater blower problem. I replaced the fan assembly but have no voltage to the motor. The fuse block lists a fuse for the fan but does not have a number assigned to it. All the fuses in the block are good. Is there another fuse located outside the fuse block for the motor ?

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85 300CD Gramps 390K
89 190D Baby 322K
93 300D Grumpy 176K
99 SLK230

Look by the LEFT upper strut mount for a black plastic box, roughly 20mm x 30mm x 60mm.

Picture with part number attached.

Danger/Warning:
In an emergency people have been known to jumper the fuse with wire or an 80 AMP glow plug fuse, this can be done as a diagnostic test FOR A FEW SECONDS.
Leaving the test jumper in place (as a repair) can and has caused many car fires.

Risk of an electrical meltdown - FIRE increases, the longer it remains in place.





Have a great day.

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ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Thanks for the help. I'll pick up a fuse today.

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85 300CD Gramps 390K
89 190D Baby 322K
93 300D Grumpy 176K
99 SLK230