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Discussion Starter #1
Anyone experienced their Bonnet Open warning when it is actually closed?
Tried open and closing a few times but the warning still sounds.
Suspect it could be the sensor.
Any other thoughts or experiences?
TIA
James
 

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Not had this one myself. Have you had a look at the bonnet catch as I guess theres a switch there to tell the car it is closed, if you did - spot anything obvious? Does the car flag an OBD code? Could be something as simple as water in the switch and/or wiring.
 

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Discussion Starter #3
I鈥檓 going to check the codes when I get chance at the weekend.. I don鈥檛 know whether it鈥檚 to do with the Active Bonnet system.
I鈥檒l check to see if there鈥檚 anything untoward and if any codes show up that can be reset, then go from there.
I鈥檒l report back if I manage to solve it..
I found this regarding Mercedes which could be similar..
 

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Yes - we have a similar system but be warned it is by a set of pyro charges and it's a one time only charge. I think they have to be replaced after they have been fired. Found this, our Nissan system.



1546
 

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Discussion Starter #5
Looking at the above, I don鈥檛 think it鈥檚 that then as the bonnet hasn鈥檛 raised up off the hinges.
I鈥檒l check the codes.
I wondered if it could be a faulty catch/latch sensor?
 

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Yes hopefully just a dodgy contact on the bonnet release. Worth a can of electrical contact cleaner then spray grease after 馃枑馃UK weather an all doesn't help 馃槙
 

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Discussion Starter #7
Taken a look today. Read the codes, but no errors showing. Gave it a squirt or two with ECC and WD40 but the warning is still there..
Got the part number for the bonnet (which is Merc), then searched online for that. Found loads of info on Merc sites. Looks like it鈥檚 the micro switch inside the lock mechanism which I鈥檒l investigate next when i get chance... hopefully tomorrow.
 

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Discussion Starter #8
Problem solved!
Looks like it was the micro switch in the lock mechanism.
Unplugged the connector, Removed the cover, gave more squirts of ECC and WD40, put all back together. No more warning alarm! :D
This is the part in question..
 

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Great news and thankyou for posting the fix as anyone else with this issue can now try what you have done.馃枑
 
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