Car has Climate Control System all electronic
From cold start up engine heats up- heater works, When set to 24C the system heats the car nicely to that temp, however instead of maintaining the desired temp the heat stops.
After about 20 minutes it just blows cold. This works intermittentently. At times set it to 31 and we get heat.
The AMB temp was -2 outside.
I would like to know what needs to be done to fix this Thanks,
Replace the climate control module
SOURCE: Hyundai Sonata 2002 EF-B V6 2.7L
put the bad coil in the place of a good on and check it after that our be sure hope it help fixya our post thanks pierre
SOURCE: The heat in my 2002 hyundai sonata doesn't work, Help!!!
Is the fan working and blowing air but there is now heat?
If there is no heat and air is blowing out check your radiator level. If the engine coolant is too low water will not get to your heater core. Remeber check the radiator level and not just the coolant reservoir. Becareful when working around a hot car. wait til the car cools down to check the level of the coolant in the radiator.
SOURCE: Why doesn't the heater blow hot air?
If your "Check Engine" or "Service Engine Soon" light is on, you need to have that checked out first.
If not, the next thing you should check is your engine coolant level. (Antifreeze) If the coolant level is low, the engine coolant does not circulate through the heater core and the the heater doesn't work. The coolant level could be low for a number of reasons including a leaky hose, water pump, or head gasket. In any case, if it is found to be low, you need to find out why.
If the coolant level is OK then the thermostat function needs to be checked to make sure that the engine is reaching operating temperature.
If all of the above checks out OK, then the heater control valve and/or the blend air door in the HVAC housing needs to be checked for proper operation. (NOTE: some cars are not equipped with a heater control valve)
SOURCE: need a wiring diagram for Hyundai Sonat 2002
Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.
SOURCE: 2004 Hyundai Santa Fe, check engine light just
Hi, turning on the heater didn't cause the check engine light to come on, it just came on at the exact time. It does indicate something is going on, but if your auto is doing fine, don't panic.Usually, it indicates an emissions problem. Take you're vehicle to auto zone, and ask them if they will come out and read the code for you, they will do this for no charge, and it will tell you what the problem is. They will also give you a print out of most all the codes. I have done this several times until I bought my own obd-2 meter. After you have the code, just have them erase it with the meter to clear the check engine light. It may come back on again depending on what the problem is, but I would recommend you doing this. Cant beat it, no charge and friendly service.
Good Luck, Shastalaker7
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