Senior Member
My 03 MM's rear window defroster and heated mirrors have decided to stop working. I checked the switch and the fuses. The switch and the fuse is good. I am thinking that it is the Rear Window Defroster Relay. Does anyone know the part number or could it be anything else? Thank you in advance.
Turbo Marauder
If you think it's the relay, swap it out with a different relay from the fuse box
Senior Member
I know this is sophomoric... check to make sure the rear defroster tabs are actually "plugged" in.
On one of my rides the defroster tab became unplugged ( I assume) due to vigorous rear window cleaning.
2003 300A Black, #4918 of 7838, 17,400 Miles
Tune, KYB's, JLT, FlowMaster 42441, Res Delete, New BFG's, 8 coats of zymoil Titanium
2003 300B Silver Birch, #21 of 419, 29,800 miles
Tune, JLT, FlowMaster 42441 Res Delete, New Nitto 235/255 Bigcarsforever dead peddle & custom SRP peddles, 5 coats Zymoil Titanium, Addco front and rear sway bars, KYBs, 1/2 inch coil cut, Sparta Watts link and Control Arms, Carfixer alignment.
2003 CV Sport Matador Red, 19,280 Miles, DD, Curless Full Service Royal flush, Marto Tune, 18 Chrome Wheels w 235/265 front/back Nitto tires, NEW OEM Sport Springs -1 coil & Monroe Severe Duty (front) shocks, Addco front and rear sway bars, KYB rear Shocks, Carfixer Alignment.
2004 CV HPP Silver Birch, 93,000 miles. Son's DD, 18 Chrome Wheels w 235/265 front/back Nitto tires (thank you Lowndex!)
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