relax4o

Hi everyone,

A couple of weeks ago I bought an E220 2014. The car itself is in excellent condition but today I was really surprised when I went to my car.
Earlier today was raining and after work just went to my car to leave some stuff. I was looking at my new car and noticed that my windshield was wiped. No one had driven the car today, so I thought someone pranked me (doesn't make any sense, anyway) but that was not the case.
I got into the car and checked if the wipers are turned to the automatic function that turns on the sensor but it was on zero so this can't be.

I've ended up with three conclusions:

1. Of course, maybe something is wrong with the sensor even though the car isn't powered and the wipers are fully turned off.
2. Thought about it while I was writing this thread - I used the car the previous day and it was raining again, so that was the last time I used the wipers which probably created some sort of layer that prevented the formation of rain drops on the window (very possible).
   1. Or maybe the angle of the rain wasn't against the windshield but this option kind of feel weird.
3. This is more of a question: I doubt it but is there some kind of protective mechanism that preemptively wipes the windshield to avoid freezing? Never heard of such thing so my guess is solid no.

I couldn't find any other topic here or anywhere in google with this kind of issue, so my best and hopeful guess would be that there's nothing wrong with sensors or anything and the best second possible thing would be option 2. In fact the rain was more of a shower, to be honest.

Have any of you ever experienced something like that?

Thanks.

KEY08

I vote option 2. Did I win?
the car won’t engage the wipers while parked and off.

relax4o

Just started raining and went out to check the car.

It's the freaking layer from option 2 . It's still getting properly wet but rain drops are not formed. The windshield still look like it's wiped. And the rain is again more a shower than proper heavy rain.

CaliBenzDriver

Now that your wipers got your close attention ... have you noticed any wiper noise near the turn-around vertical point? (Regardless of new/old OEM blades)

There's a wiper arm adjustment and a thread to fix that.

pierrejoliat

Maybe your wiper blades are infused with Rain-X?

CaliBenzDriver

​​​​​​
yep and I sort of recall Benz TSB about the wiper adjustment... recommending against any slick silicone near our windshield.

relax4o

@CaliBenzDriver I'll check that tomorrow but I don't recall any noises that will get my attention to be honest. I am usually quite observant about any noises. The car was always serviced at Mercedes so maybe they were doing those adjustments

@pierrejoliat I geuinely don't know.

Is this layer good or bad, after all? Never felt any disruption while driving.

Left Coast Geek

More likely, the windshield was glass-waxed, and the wipers have stripped it off where they go, so the water is sheeting where the wipers are and beading where they aren't.

relax4o

That's exactly what happens.

pierrejoliat

Well, you mentioned the car was serviced at the dealer, they would not likely use the Rain-X replacement blades, so LCG's suggestion could be likely, there's a whole thread on wiper arm adjustment for bad performance, some have issues, some don't. In your case if your not noticing skipping and dragging, with missed spots, your probably fine as far as adjustment goes. I've never seen a dealer detailer use glass wax on a windshield, but it's certainly possible. Checking your wiper blades to see who made them would rule them out?

CaliBenzDriver

... that confirms your car has NO PROBLEM with ghosts screwing with your wipers.
Make sure the vampires are not after draining your batteries

bzcat

Let's turn our attention now to your low blinker fluid level warning light

relax4o

What about it?

Senecat

How is this a thread?

relax4o

What's wrong with it? Did I break any rules?

The question was raised because the car is new with lots of functions that my previous ones didn't have and I've never had a Mercedes. It never hurts to ask other owners if they've exprienced something similar that might have ended being faulty sensors etc....
I live in a rainly location and I found it strange that after the rain my windshield was still wiped. Something I didn't experience with any of my previous cars. I don't see anything wrong in asking. Sorry that you feel that way. Feel free not to participate if you feel like trolling around.

Thanks, mate.

hyperion667

Classy

Allblackbenz11

I had the engine fan turn on for a brief second with no key in the car, right as I was bending down near the grill. It startled me because I was holding the key in my hand. Then I screamed like a woman and ran screaming and hid under the bed and screamed for another 6 hours til the coast was clear.

Could the car be experiencing paranormal events? Or is it just a bad ecu. I for one cant tell. Because sometimes when I turn left the wipers go on when they're off.

I was dumbfounded and a couple days later the car keeps saying it's overheating but it's not. I think it could be the ECU that is bad maybe the MAF but I doubt it.
​​​​​​

Left Coast Geek

I've had many older cars where the fan would come on a minute or two after shutting down the engine hot and run for a few minutes. but these cars, the electric fan was controlled by a simple thermoswitch in the radiator, you stop, and all the heat rises and triggers it.

Allblackbenz11

Whatever it was it was pretty random and unexpected now that I think of it. I bent down to clip the tabs back into the plastic piece that the front bumper clips into on the sides by the wheel wells and putting detailer on the bumper when it happened, And I don't remember it being hot near the engine at all. I'm being totally serious. At first I thought the car was going to turn on but only the fan came on for 3 seconds and then turned off.

​​​​​​I Was just glad it didn't turn in to a situation like emilio estevez had, on his hands when those big rigs were driving by themselves and causing insurrection. It was called maximum overdrive good thing our cars don't have overdrive.

Left Coast Geek

actually, the 7G-tronic, the top two gears are both technically 'overdrive' gears, with a greater than 1:1 ratio. 5th gear on the 7G is 1:1

a classic transmission, the top gear was 1:1, engine RPM is the drive shaft RPM. an overdrive unit originally was an additional gearbox behind the transmission that steps that up, so the drive shaft is running at a higher RPM than the engine... but many of the classic 'overdrives' like the Laycock units on vintage english cars were in fact 'underdrives', so their normal state was stepping the transmission output speed /down/, and when you engaged 'overdrive', you reverted to 1:1... really the term 'overdrive' is pretty meaningless, because what any drive shaft speed actually means is dependent on the final drive ratio in the differential.