karsten doering Posted September 3 Share Posted September 3 Hello, I have an Alphard 2004 with a 3.0l machine. My heater doesn't work. It has enough liquid and the thermostat is working. Does anybody know how to clean the heatexchanger or how to replace it. A manual would be marvelous. Greetings Karsten Quote Link to comment Share on other sites More sharing options...
Rojie Posted September 7 Share Posted September 7 On 9/3/2024 at 9:51 PM, karsten doering said: Hello, I have an Alphard 2004 with a 3.0l machine. My heater doesn't work. It has enough liquid and the thermostat is working. Does anybody know how to clean the heatexchanger or how to replace it. A manual would be marvelous. Greetings Karsten You may need to bleed the heater system. I don't know how, but other members do; so you should get an answer soon. Quote Link to comment Share on other sites More sharing options...
karsten doering Posted September 14 Author Share Posted September 14 Thanks for your answer. I will do so. Does anybody know where the heat- exchanger is. I want to clean it. Quote Link to comment Share on other sites More sharing options...
Picasso Posted September 14 Share Posted September 14 The heat exchanger is up inside the dash board Quote Link to comment Share on other sites More sharing options...
karsten doering Posted September 21 Author Share Posted September 21 I checked it, there is no air in the System. But i just noticed in the rear the heater is working. Does anybody know what the reason can be? Quote Link to comment Share on other sites More sharing options...
smurf Posted September 21 Share Posted September 21 Is the temperature control flap moving? This video will help to locate it Quote Link to comment Share on other sites More sharing options...
karsten doering Posted September 22 Author Share Posted September 22 Great Link and video. Thank you very much. I can't say if the actuator is moving it doesn't make any sound. Can you hear it if it is moving? Quote Link to comment Share on other sites More sharing options...
smurf Posted September 23 Share Posted September 23 If you turn the temperature all the way to maximum and all the way to minimum you should be able to hear it moving the flaps to either end of its range. You might be able to see some of the mechanism moving as well. Quote Link to comment Share on other sites More sharing options...
karsten doering Posted September 24 Author Share Posted September 24 Ok thanks, good idea. I tried that and there is no noise where it should be, regarding your video. At the back I could hear a noise. So probably thats the reason. Next week I will have someone reading out the computer connecting via the OBD port, which toyota couln't read. Then I should be save with the diagnosis. Great help, thanks.:) Quote Link to comment Share on other sites More sharing options...
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