Questioni'm new to VW. Three things the dealer tells me my n80 valve is bad. is this difficult to replace? is it behind the battery(i have a Bentleys)? How do i get the radio code if i disconn the battery? They tell me the AC control switch is bad, do i have to remove the radio to get to this? and the coolant flange is leaking, do i need the "AIRLIFT" to replace this and replace the fluid?
AnswerHi Steve;
The "N80" valve is the "purge valve" for the EVAP system. It's right by the coolant reservoir bottle. One wire connector, a rubber collar to remove, and replace, and you're done.
Radio code requires removal of the radio to get the serial number...a 14 digit number that will look something like...VWZ9Z7G1077789. With that number, and the vin of the car your local Volkswagen dealer can tell you the code.
The entire dash, and center console have to come apart in a Beetle. Any other requires the removal of several pieces of trim, but the Beetle is "special." Get a pollen filter while you are at it, and replace it while you've got the whole thing apart.
The coolant flange is a relatively nasty job, because there are fasteners that secure the flange to the cylinder head, but they also hold the bracket supports for all of the other wiring, and vacuum hoses at that end of the engine. And, yes you NEED the "AIRLIFT" tool to evacuate the cooling system for removing air pockets, otherwise you will overheat. And, also, yes, do replace the coolant. Do not re-use it, you will be far happier with the results.
Good luck, Steve.
