Boxster Key Battery Drain-Fix or buy new Transponder?

[KAKI3152]

I've been having a problem for the last month or so that has become aggravating. I received two keys and a valet key when I bought my used Boxster three years ago. Both keys worked well,though definitvely showing use.

A month ago, i had to finally replace the watch battery in both my primary and secondary key. Since then I've run into a problem that has become a nuisance. The watch batteries don't last in the keys. They are 3V Lithium batteries and they are only lasting 1-3 days. by the third day, the light barely lights up when I push the button.

One question, I have is can this be fixed by reprogamming the key? I called the local Porsche dealer and they charge $70 to reprogram all three keys. Will this fix the problem? What could be draining the watch battery?

A new remote is $183 so If I have to pay for a new remote on top of the reprogramming of the keys, I'm looking at $275 (incl tax) out the door for one new transponder and two re-programmed keys. You can buy a lot of watch batteries for $275 and money is tight.

Any suggestions welcome.

[wvicary]

Both key fobs have new batteries and they go dead in 3 days? They are transmitters so should only be consuming power when a button is being pushed. Is the LED light on all the time or only when pressing a button?

[KAKI3152]

Hey, I'm just reportng what's happening, Maybe the batteries I'm buying at Target are " a poor batch". I talked to my Porsche mechanic and he said that they once had a bad batch of batteries. Could a reprogramming of the keys change this?

The LED light only goes on when the button is pushed. First day nice bright light, second or third day dim light, and fourth day vey little light.

Edited November 24, 2011 by KAKI3152

[wvicary]

I dont think reprograming will change anything. I can only suggest a different battery supplier. Some batteries stamp the expiry date on the package so try a buy the newest as possible.