so im driving along and all of a sudden my ac head unit lights all go out..the fan kicks on high,or medium with no lights..no control option either. but the time still reads correct. i get home shut it off turn it back on and everything is back to normal. any ideas?

 

possible, would be the first place to look for sure if you've never cleaned up the harness in that area.

 

ok thanks...ive never done anything to the harness

 

anyone take the ac head unit out? a link or instructions would be appreciated..thanks

 

Do you mean the HVAC controller?: http://www.lexls.com/tutorials/audio/headunit.html

The HVAC controler is attached to the same frame as the radio head unit - easy to separate once you pull the whole thing out of the center stack.

Wow! If the trunk hinge wires have never broken that would be amazing in a 20 year old LS400. The ones in my 90 LS starting breaking at around 13 years.

 

gonna look at the wires first..then if nothing is found..or there is a broken wire or 2 and i fix it and it doesnt solve the issue,then ill replce the unit in the dash....thanks for the link btw!

 

so i unwrapped the tape and inspected the wires on the drivers side trunk hinge...i dont see any problem with any of the wires..none of the casings are split..but the way the wires are routed they are bent in a few areas..are those the problematic areas? and do i need to test with a ohm meter or are the problems u guys have pretty straight forward..meaning..are the wires visibly broken when the tape is unwrapped.

 

From my experience, the insulation is usually not broken even when the wire core is completely separated. A wire with a broken core will bend easier at the point of the break - grab each wire with both hands and do some wiggling ... of the wire.

 

every now and again i start the car and a few of the green lights come on...the a/c,temp and fan..then shuts right off. clock still works though...cant be a fuse and im sure its not the wiring in the trunk.

 

i cant believe not one person has had this problem...probably 1 hundred gen 1 members..half or more own a 90-92 all of which are 20 yrs old and have as many miles on them or more...not one time has anyone had this problem with the ac unit in the dash..flippin amazing

 

Is it possible that the LCD display is just going bad? That is a common issue with these cars.

 

thats the 93-94...my clock is working but the climate control lights arent lit up