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When i was away on a road trip last weekend, i noticed 2x there was an upside down key symbol showing on my dashboard. The sign didn't blink nor it had warning color, so what i did was take off my house keys and key chain off my car key.
Then next morning, I had issue inserting my car key. I cleaned the built up dirt (my dog's fur, my son's crumbles, god knows) , and tried again. It worked. I had bit issue tryibg to take off my key a few times after, but it has been working back to normal now.
Do i need to worry about this issue and take my smartie to dealership? I jhvae a smartcar coupe 2013. Thank you in advance!
 

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When i was away on a road trip last weekend, i noticed 2x there was an upside down key symbol showing on my dashboard. The sign didn't blink nor it had warning color, so what i did was take off my house keys and key chain off my car key.
Then next morning, I had issue inserting my car key. I cleaned the built up dirt (my dog's fur, my son's crumbles, god knows) , and tried again. It worked. I had bit issue tryibg to take off my key a few times after, but it has been working back to normal now.
Do i need to worry about this issue and take my smartie to dealership? I jhvae a smartcar coupe 2013. Thank you in advance!
Could be some gunk in there. Try a bit of wd 40 sprayed into the key opening. It'll get gunk out and loosen the tumblers.

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The "upside down key symbol" means:
The electronic immobilizer is not working.
X Have the system checked at an authorized smart center.
 

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WD-40 is a combination solvent and light lubricant. Google WD-40. There are thousands of uses for this product. It should free up the tumblers in your ignition switch. I would also place a vacuum hose over the switch and see if you can pull any debris out that has fallen down the key slot.
 
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