Remove fuse for headlamp washer relay and leave out.
See if battery then holds charge for a day or two. If battery holds charge with washer relay fuse removed, you've isolated the fault.
If not, problem elsewhere.
Could be a bad "ground", ground cable, or a short in a system.
Possibly the voltage regulator is not recharging the battery when the vehicle is running or even as simple as battery connections are dirty and loose.
Need professional electrical diagnosys
SOURCE: 2002 Dodge grand caravan
It would appear that the relay is located on the cross rail that runs across the front of the vehicle (in front of the radiator). I found out that it is riveted in place by a single rivet, so in order to replace mine, I will have to remove the rivet and use a self-tapping screw to secure a new one.
The fan relay is located in the fuse panel located under the hood beside the battery. It will be marked under the lid. Make sure you check the maxi fuse for the fan also.
SOURCE: My power windows stopped working in my 2002 Dodge Grand Caravan.
Demand a recall or maybe there is one. I know Dodge has electrical problems with the way they made their vehicles. Many of there vehicles have trouble.
SOURCE: 2000 Dodge Grand Caravan need to know where relay
the cooling fan relay is not in the fuse box.
it is a solid state relay bolted to the radiator core support just behind the bumper
SOURCE: 2002 dodge grand caravan fuse box
The fuse box is located under the hood. There is component map printed on the inside of the cover. This tells you on your model where the fuse or relay is located
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