A4 heater problem

[bigcooler]

hi my dad has got a 1995 A4 tdi 1z and when you turn the ignition on the heater control pannel flashes and you cant get the heaters to work. if you try to do any thing it keeps resetting itself every 2 seconds or so, even if you start the engine the same happens. any help would be much appreciated. thanks ben

[bigcooler]

also the outside temperature display reads anything from -49F to +92F is this related in any way.

[sam80quattro]

is passenger footwell wet? my a6 did the same and it was the central convenience unit under the carpet, caused by the battery tray filling with water because of blocked drains and it eventually comes over the top and into the car

[johne]

If you follow this link

https://www.audiworld.com/tech/int6.shtml

you'll find out how to enter the climate computer diagnostic mode which will let you pull codes & hopefully point you to your problem.

John

[bigcooler]

ok ill try that thanks for your info.