hi all i have a 1992 Ls400 and my heater doesn't work.

doesn't blow fan doesn't turn on nothing.

sometimes my front defrost blows, and when it does... it does blow hot.

my LCD screen climate control is broken. but some of the buttons light up.

if i replace the LCD screen will my heater blow again?

if not what parts do you think it could be, anyone else have this similar problem?

i do plan on getting a LCD screen climate thing anyways. but i'd like some insight so i can pick up any other parts i need.!!!

 

id check your heater core to see if its opening...

www.lexls.com > go to cooling.

 

Check the heater control valve. Here is the thread on how to troubleshoot and do temporary fix Heater Control Valve

 

if it is the valve...i have that part for sale .

 

Would this make my heater not turn on at all? aka it doesnt blow any air at all, hot or cold.

 

If you read and follow the link I showed you, you will find the answers to your questions.

 

it looks like in that link the OP has problems with his heater blowing cold, but its still blowing. i dont have any air coming out at all.

 

Check the fuses.