2004 BMW E46 Heater Control Valve Diagnostics and Replacement

[@bobbywarrior1434]

very interesting video, strange case of uneven temps on vents, glad to hear you fixed it, thanks fir sharing 👍

[@JRsGarage]

My pleasure.

[@rbell3505]

Can't believe I've found the exact info I was looking for! Thanks for the video

[@JRsGarage]

My pleasure.

[@JOATiDetermined]

No kidding! 2000 323i owner here

[@JRsGarage]

Someone’s gotta keep these old cars running. New cars are too damn expensive!

[@skunkedagain]

great problem description, diagnosis and fix. nicely documented. thanks for sharing

[@JRsGarage]

My pleasure.

[@RobbieKhan]

Nice one cheers, I am replacing the heater control valve on my E46 M3 so have the version with 2 solenoid pumps, same job and seeing the use of the c clamp was really genius as saves having to do a coolant flush and extra faff/mess. Cheers!

[@JRsGarage]

Happy to help.

[@ivancenteno9425]

I am to lol tomorrow

[@OGstorieswhite]

My value is not heating up does it mean it's bad?

[@JRsGarage]

It could be, but it also could be the signal is not getting to the valve to open. Did you check the fault codes?

[@OGstorieswhite]

@@JRsGarage no but will do thank you sir

[@rulee30]

Do you need to bleed the coolant system after replacing the valve?

[@JRsGarage]

I lost very little coolant so I just drove the car and checked the reservoir and topped it up over the next few days. If you lose a lot of coolant you will need to bleed the air out.

[@rickyricardo2031]

Which hose goes directly to the heater core? I’m trying to clamp it off to see if that resolves my warm AC issue

[@JRsGarage]

Sorry, I can’t remember which is in and which is out. Although if you clamp either one of them you stop flow through the core.

[@jluis5188]

I have constant 12v and ground at connector even with car off?

[@JRsGarage]

I don’t have the electrical schematics to say what the ignition off default should be but it sounds like you have a short in your 12v feed somewhere.

[@arnolduk123]

In this video I can see you have the console vent position set to cold (blue) when pointing that digital thermo reader! Great video on how to change and check the heater valve though.

[@JRsGarage]

Yes, I realized that afterwards but forgot to reshoot the video. Thanks for the comment.

[@sh3dovv]

One of those 2 hoses that come through the valve is leaking. Do you have a DIY on replacing them?

[@JRsGarage]

No, I do not but just probably need to take off the hose clamps to remove it and then get a new one and refill with coolant.

[@rainydays383]

Would. That cause smoke to come out the blowers or do u think that’s blower motor gone

[@JRsGarage]

No, the valve wouldn’t cause that. Does it smell like electric fire?

[@jebohim]

Did You solve the problem with temperature diffrence in vents?

[@JRsGarage]

Yes. The refrigerant was low.

[@jebohim]

@@JRsGarage Thank You very much for answer🤠🥰. Greetings!

[@jonb2676]

what about the un even heat? mine has that exact issue.. cold one side, warm the other and like yours no duel climate control.

[@JRsGarage]

The refrigerant was low. That caused my uneven cooling issue.

[@jonb2676]

sorry I meant the heating side of it... That is my issue.. uneven heat on both sides

[@tengzturiagaiii3185]

What hose is the that was on top of the actuator that you moved? ( you mentioned its a vaccum hose) where is that connects too? Pls help.

[@JRsGarage]

If I recall that's the hose that goes to the purge valve which is attached under the right side of the intake. The other end connects to a hard line that goes back to the charcoal canister.

[@tengzturiagaiii3185]

I see. For some reason mine is off and Been tryna figure out where it connects. Since i saw your video and saw it you moved it. Gabe me an idea.

[@deelan5726]

Great video man thank you!

[@JRsGarage]

My pleasure.

[@AmzK]

Thanks for the vid! What's freon?

[@JRsGarage]

Air Conditioner refrigerant.

[@Ndzila-pl6qw]

great video.... does Heat control valve also responsible for cold air? ...from SOUTH AFRICA

[@JRsGarage]

No, it only controls the hot coolant going through the heater core.

[@gamesandstuffbalcer5327]

Thank you for this video, I have the same problem and I’m almost certain it’s the valve.

[@JRsGarage]

Happy to help.

[@corneliussimpkins6296]

Can this cause pressure to blow the expansion hose

[@JRsGarage]

No, that might be a blockage in your expansion tank causing it to not vent properly.