A few minutes ago with headlights, sig. lights, AC, radio all on, my 81 300D suddenly lost fuel and eng. temp indications (both gages to 0 at same time). Also lost sig. lights and cool air. Flashers, compressor and heat/cool fan work, but sys blows only VERY hot air. I suspect a fuse, no light to check other symptoms, yet - flashlight is dead, too. Other than to keep fully charged flashlight handy, any tips? 'On the car, not the flashlight. TIA

Sounds like a fuse to me.

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euro 287
Mercedes Technician 7 Years (retired to Hyundai)
2000 Dodge Durango
98 Mazda truck

'Found a nearly dead flashlight few min ago and quickly "looked at" fuses 'til that light went dead. Fuses look "OK" at a glance in the really bad light, but I strongly suspect # 12 - window ops. also dead. I'll change # 12 in the morning - these fuses can look good but really be bad.

'Replaced fuse # 12 this morning. All OK now.

Don't forget to just wholesale replace them every now and then too

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Jim