Rear Defroster Dilemma

4 messages, Last post on Mar 16, 2009 at 2:41 PM

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#3 of 4 Re: Rear Defroster Dilemma [rsht] by 10mikeymike Mar 16, 2009 (12:52 pm)
Replying to: rsht (Mar 16, 2009 6:46 am) Thanks for the response. Thanks also for checking yours out. After posting my thread yesterday, I decided to go out and super glue mine back on. I figure Winter's almost over and if necessary, I'll deal with it again next Winter. In the meanwhile, I didn't want to see the wire and connector dangling every time I look in the rear view mirror. After gluing the terminal back on and letting it cure, I reattached the wires. Within a few minutes I touched the base of the terminals on either side of the window. I was amazed at how hot each of them were. I realize they have to generate some heat to accomplish their intended purpose, but I'm now convinced that they may be getting too hot and melting the solder as a result. While I can't confirm it, I also believe that the rear defroster may come on when I remotely start the vehicle. If that's the case, it will probably melt the super glue and/or the solder on the other side very soon and confirm my suspicions. Either way, now I will tell the dealer to look beyond the terminals for the root cause of the problem. Replies to this message: rsht (Mar 16, 2009 2:41 pm)
#4 of 4 Re: Rear Defroster Dilemma [10mikeymike] by rsht Mar 16, 2009 (2:41 pm)
Replying to: 10mikeymike (Mar 16, 2009 12:52 pm) NP. Wow! Hot enough to melt the solder? Ouch! Something doesn't sound quite right... Earlier I had a chance to try out my rear defrost and below are my observations: 1. My rear defrost does not come on automatically when I remote start my Denali, unless I leave it on when I turn-off my vehicle. Even when leave the the rear defrost ON, as I recall, it will turn itself off automatically after approximately 15 minutes or so (did not clock that)... 2. I ran my rear defrost for about 9 minutes or so, then I opened the rear glass and touched each terminals with my index finger, they were no where close to "hot". Each was only warm to touch and I was able keep my finger on the terminal with no problem... I believe you are right to tell your dealer to look beyond the terminals, they need to make sure there is not a short circuit somewhere before attempting to solder the terminals back on again... Good Luck to you!!

#3 of 4: Re: Rear Defroster Dilemma [rsht] by 10mikeymike; Mar 16, 2009 (12:52 pm)

Replying to: rsht (Mar 16, 2009 6:46 am)

Thanks for the response. Thanks also for checking yours out. After posting my thread yesterday, I decided to go out and super glue mine back on. I figure Winter's almost over and if necessary, I'll deal with it again next Winter. In the meanwhile, I didn't want to see the wire and connector dangling every time I look in the rear view mirror. After gluing the terminal back on and letting it cure, I reattached the wires. Within a few minutes I touched the base of the terminals on either side of the window. I was amazed at how hot each of them were. I realize they have to generate some heat to accomplish their intended purpose, but I'm now convinced that they may be getting too hot and melting the solder as a result. While I can't confirm it, I also believe that the rear defroster may come on when I remotely start the vehicle. If that's the case, it will probably melt the super glue and/or the solder on the other side very soon and confirm my suspicions. Either way, now I will tell the dealer to look beyond the terminals for the root cause of the problem.

rsht (Mar 16, 2009 2:41 pm)

#4 of 4: Re: Rear Defroster Dilemma [10mikeymike] by rsht; Mar 16, 2009 (2:41 pm)

Replying to: 10mikeymike (Mar 16, 2009 12:52 pm)

NP. Wow! Hot enough to melt the solder? Ouch! Something doesn't sound quite right...

Earlier I had a chance to try out my rear defrost and below are my observations:
1. My rear defrost does not come on automatically when I remote start my Denali, unless I leave it on when I turn-off my vehicle. Even when leave the the rear defrost ON, as I recall, it will turn itself off automatically after approximately 15 minutes or so (did not clock that)...
2. I ran my rear defrost for about 9 minutes or so, then I opened the rear glass and touched each terminals with my index finger, they were no where close to "hot". Each was only warm to touch and I was able keep my finger on the terminal with no problem...
I believe you are right to tell your dealer to look beyond the terminals, they need to make sure there is not a short circuit somewhere before attempting to solder the terminals back on again... Good Luck to you!!