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I recently replaced the AC Compressor at my friends shop. We have to take of the front pumper and electronic fan to be able to take out the old compressor and install the new one. It took us 4 hours. Nothing tricky. However, after we got the AC Compressor replaced, I got this wired "Hood Open" warning when I reach a speed of about 60mph. if I slow down to 40mph, it disappears. Anyone have any idea how to fix it? Reapply appreciated.
Same issue on mine. Never had it fixed or addressed. Just had to open and close hood two times each time it was opened...sounds like Peter has the path forward.
wow ... that will be very annoying should I just replace both of the hood sensors? I just fund that even I do not have the driver side sensor connected, I do not get any warning message, until I am over 60mph. However, if I disconnect the sensor on the passenger side, I will get the hood open warning right after I starting moving at 2-3 mph. It seems like the one on the driver side is just been useless or not connect to the computer at all.
to my observation so far, it is the air pressure in the engine bay triggers the "Hood Open" warning message. I do not see any visible or noticeable hood movement at high speed. It was still at closed position at 60+ mph. The hood sensor should not be triggered by such a engine bay pressure increase. I could not put all the clue together. It is just so wired.
I would recommend you re-trace your steps when you replaced the compressor. I suspect you inadvertently jarred the hood sensor a bit out of position. Way too coincidental that it came on after the compressor replacement job.
The mysterious problem has been resolved mysteriously! My friend who operates a repair shop applied some penetration oil on both hood latches. After that, no warning message anymore. no explanation, what so ever! have a good night. Hopefully this can be helpful to anyone who has a similar issue.
The mysterious problem has been resolved mysteriously! My friend who operates a repair shop applied some penetration oil on both hood latches. After that, no warning message anymore. no explanation, what so ever! have a good night. Hopefully this can be helpful to anyone who has a similar issue.
sometimes the e class Benz good seems closed and latched but only one side is latched and this is likely what was going on. This allows a little play in the hood and likely triggered the sensor. In your case the air flow at over 60mph lifted the culprit side and triggered the warming.
If you don't slam the hood down hard, it'll give a warning to me immediately that it's open, but you can also just press each side of the hood down and make sure it latches
By the way, left the dealership one day and had that come on in the rain and the wipers will be intermittent and stop until you get out and close the hood. It was a little scary with no wipers. I made it back to the dealership and they confirmed, hood warning, no wipers..........
By the way, left the dealership one day and had that come on in the rain and the wipers will be intermittent and stop until you get out and close the hood. It was a little scary with no wipers. I made it back to the dealership and they confirmed, hood warning, no wipers..........
Interesting. I'm guessing the edge of the hood near the windshield must interfere with the wiper mechanism if slightly open so the wipers get locked out. These Germans think of everything!
If not this, I have no idea why the wipers would get locked out due to the hood.
Theres actually a specific way you are supposed to close the hood. The owner manual has the instructions where it says to properly close it you are supposed to use decent force from a certain distance where you let it drop from there, i forget the exact details.
Theres actually a specific way you are supposed to close the hood. The owner manual has the instructions where it says to properly close it you are supposed to use decent force from a certain distance where you let it drop from there, i forget the exact details.
Did a little search on youTube after reading your post. At first, I thought that letting the hood drop might not close it... I just felt like the struts are too tight to allow that to happen. I had been lowering it 'til the hook went past the safety rod (or whatever that metal piece is called) and then pushing down on the hood by the curves that outline the grille. But, I guess dropping it would work...
02-17-2019, 11:05 PM
should I just replace both of the hood sensors? I just fund that even I do not have the driver side sensor connected, I do not get any warning message, until I am over 60mph. However, if I disconnect the sensor on the passenger side, I will get the hood open warning right after I starting moving at 2-3 mph. It seems like the one on the driver side is just been useless or not connect to the computer at all.
no explanation, what so ever! have a good night. Hopefully this can be helpful to anyone who has a similar issue.
