My wife has mentioned a few times that the metal "blade" of her ignition key seems excessively hot after driving. 05 MCSa, about 7500 miles.

Typically happens in hot weather, with ot without the AC on. She has a short (10 minute) commute as well. I have not noticed this in my 06 MCS.

Any ideas on this? Anyone else with similar symptoms?

Thank you!

-jac

 

I've noticed my 06 key is warm too after use, I think it's because of the key-fob-batterey being recharged while it's in the ignition.

 

That is most likely the source of the warm key blade. Another thing to remember is to charge both keys. If one is not used, after about 6ish months, it will most likely be discharged and may need a replacement battery.

 

wow, no way?

such freak tips you get on this forum.

 

This actually came up on CAR TALK last week. Is the key really hot? I mean too hot to touch? Or just warm?

If it's warm, I would agree with Deviant's post.

If it's hot, it could be a short in the ignition collar, and worth getting checked out.

Hope it's just warm.

 

thanks for all the feedback - i'll have find out if it is just warm or more like hot.

 

mine does that too, except sometimes its too hot to touch

 

Mine is hot too. But believe it to be a function of the latent heat built up in the car.

The ignition system where you insert the key is metal. So during the summer when it parked and just building heat up all day it's going to get pretty warm. So you go out and put your key in the car and start driving. The heat/energy from built up in the metal has a place to go through a highly heat conductive surface (your key).

Same sort thing happens with my Whalen shift ****. It sits in the car all day long absorbing heat energy. So when you touch it it's going to be hot. And before some people jump on me about covering up the shift **** so it's out of the sun, that doesn't make a difference. I had something I through on it for a month and the difference in the temperatures using the cover and not were negligible.