Air-conditioned cool when the car move and hot when the stop
When the car stop air-conditioning blow the hot air but the car move the air-conditioning get cool
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Hi Rizal,
The air conditioning works by blowing air through the condensor that's mounted in front of the radiator, which takes away the heat that's being exchanged for cold inside the evaporator. If not enough air is going through the condensor, then it's not going to take away the heat and the car won't blow cold air.
When the car is moving, there's plenty of air going through the radiator, but when it's stopped it depends on the radiator fan to move air through. If that fan has failed you'll get the exact symptoms you're seeing. Open up the hood and verify that the radiator fan is running when the car is stopped and idling with the A/C on. If not, you'll have to try and diagnose whether it's a failed fan motor or a wiring problem, which could include wires, connectors or fuses. Here's what you're looking for.
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Possibly the r34a refrigerant level is extremely low. When the engine is at or near idle, it can't expand enough to make the compressor see adequate levels, thus shuts off the compressor to avoid burning up. When it's above idle it has just enough to allow the compressor to engage. Have your levels checked, and possibly a leak test.
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Mercedes like many cars uses water temp sensing. If the coolant (water) level is low, the AC Compressor won't start. As soon as you get air flowing through the radiator and the engine cools a bit the AC will start. Check for clogged Condenser fins, it sits in front of the radiator, behind that it the Electric Cooling fan, which you should check for operational function.
your ac compressor have bad compression and needs gas to cool the air. you have to change the compressor
Update (06/03/24)
Or look if your radiator fan are working when you turn on the AC
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Sir air filter location
由 Gaurav Yadav 完成的