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#1
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1995 e420(w124)
Does any one know where the AUX FAN FUSE is in this car?Placard on fuse box states aux fan fuse located out side box . Thanks. Dan
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#2
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Drivers side - Next to the strut tower. In a oblong black plastic case - flip open the lid to find a blade fuse.
Picture in this thread, post #6 94 e420 A/C blower just quit!!
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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein 09 Jetta TDI 1985 300D |
#3
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I get the impression that two different blowers are involved here. The strip fuse is for the blower that blows air in your face. The aux fan blows air onto the condenser and radiator. I think those fuses are on top of the two relays that control the two speeds.
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Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician |
#4
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There is a second strip type fuse that is closer to the firewall. Could that be it? (can't think right now...ate too much at brunch )
__________________
It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein 09 Jetta TDI 1985 300D |
#5
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Well, I found two problems. #1 ,30 amp fuse on top of relay under cover behind fuse box blown. #2 , Wire going to the top of the large resister in the left front fender well corroded and crystalized. Fixed both and now fans run as specified, however , the resister cover is getting hot when the low speed fans are operating. Is this normal? Thanks, DAN
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#6
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Well, I found two problems. #1 ,30 amp fuse on top of relay under cover behind fuse box blown. #2 , Wire going to the top of the large resister in the left front fender well corroded and crystalized. Fixed both and now fans run as specified, however , the resister cover is getting hot when the low speed fans are operating. Is this normal? Thanks, DAN
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#7
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Quote:
You may also want to upgrade the 15A fuse for low fan relay..this a a Benz mod to 25A. |
#8
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I understand that adding resistance will generate heat... any possibility this heat cycling degraded the wire connection on top of resister? This connection appears to be #18 wire , where as the lower connection appears much larger...possibly #10 wire.
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#9
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Yes ,they tend to burn up..
The reason for the different gauge wires is b/c there is less amperage draw for low fan as the resistor is in series with the circuit, whereas the other wire by-passes the resistor for high fan, which has a higher draw. Some guys do go back to the relay with a heavier wire because they were marginal to begin with..the trick is to have good , solid connections at the resistor ends..I use appliance wire end/connectors [ hardware store item..or RS] as they can withstand the heat much better.. |
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