usedname

I have an 04 with 80k miles, I got it at 69k miles, and the rear defrost has always been very slow to get rid of condensation or the very scant ice we might get. Is this a feature or a bug? It seems like all the defrost lines work, just slowly, so I'm not sure if it's a problem with a fuse.

Ideas?

Edit: ya know what, I searched on google and it brought up a bunch of posts on this forum on this exact topic. I guess it's just slow, end of story. Sorry for the extra thread.

CA2WALS430

Hmmm, well I know it doesn't make any sense, but I bought my LS from a Los Angeles owner who had never had to use the rear defrost, and I lived in Washington. It actually seemed to gain over time. Is it possible the little coil lines just harden or something? Sounds dumb, but I feel certain it improved.
**Also, there are different kinds of ice. If you are in a desert area and getting that thin dry-ish ice, that is harder to defrost. My rear window can get rid of wet ice and snow faster than that stuff. Oh, and condensation...yeah, that is really hard too.

Lrobby99

Don't 'ya hate it when you know the Ford Focus can clear the rear window in 1/3rd the time!

BigBoomer

I bought one of those car dehumidifier (silica bead) bags and put it on the shelf behind the rear seat but in front of the Subwoofer. Zero condensation since then. :-)
Yes, the defrosters all seem to be a bit slow on the LS430s, especially when there is ice on there.
Don't forget it's a 2004 you're driving with 2004 technology.
These cars are so good it's easy to forget and think you are in a nearly new car.

YODAONE

On the LS400, OEM Negative Battery cable, positive Alternator Cable and engine to chassis ground cables are 6 gauge thick strand unplated copper wire. on a 100 Amp alternator.

On the LS430, it appears there is an extra ground between transmission and chassis...Same 6 gauge wire is not ideal from a voltage drop perspective.

The LS430 uses a 130 Amp alternator and 6gauge is not ideal.

Distance for measuring DC circuit voltage drop is to - from distance of power source to device.
Possibly reconfiguring positive, negative, and chassis to engine/transmission ground cables to tin plated fine strand 4 gauge marine grade battery cable will help alleviate the slow defrost cycle.

https://www.clublexus.com/forums/ls-...ive-cable.html

https://www.clublexus.com/forums/ls-...ng-issues.html


Hope this helps,

eggcelsior

my 01 either takes a long time or doesn't work too lol, I haven't figured it out yet