Why is my car AC no longer cold?

The most common causes of broken air conditioning are leaks or compressor issues. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC.

When do you Know Your BMW air conditioner is working?

You usually won’t notice until the first hot day of the following spring/summer season and upon turning on your AC you realized there is cold air (or only cool air) ONLY blowing out at the driver’s vents and hot or warm air streaming out the passenger vents.

What kind of air conditioner does a BMW have?

Last year May on the first hot day of the year I noticed my AC vents were ONLY blowing cold air on the driver’s side and hot or warm air out the passenger vents. It’s 80F+ Degrees out…

Why does MY BMW AC blow warm air?

If one of the solonoids fails, it can get stuck open. Causing coolant to flow through the heater core. Thus causing warm air on one side as it’s blown by the fan. Any proper BMW shop can take care of this. Final stage unit has nothing to do with the temperature of the air at the vents.

How long does it take to recharge a BMW air conditioner?

Recharging the air conditioning system on your BMW is a straightforward process you can do yourself. Your local auto part store can probably sell you the fluid refill you’ll need, and you can complete the process itself in 15 minutes or so. Unfortunately, AC systems can break from the inside.

What is the cooling system on a BMW E46?

BMW E46 cooling system components include: Radiator and coolant overflow tank. Belt driven coolant pump bolted to the front of the engine block. Electric cooling fan attached to rear of radiator. The cooling fan is controlled by the engine control module (ECM) via an output final stage.

How does a BMW 325i coolant flush work?

Using a 50% distilled water 50% engine coolant mix, slowly fill the expansion tank (green arrow) until the coolant comes out of the expansion tank bleeder screw (blue arrow). Trapped air is common when filling a cooling system and can result in improper cooling. It is important to bleed your cooling system each time the cooling system is serviced.

Is there an air conditioner problem in a BMW?

BMW cars aren’t known for having air conditioning problems, but if the air isn’t blowing cold when the temperature rises, that doesn’t matter for much.

How to test for coolant leak in BMW 325i?

Working with a cold engine, install pressure tester to coolant expansion tank. Pressurize system to 1.5 bar (21.8 psi). Pressure should not drop more than 10% over a two-minute time period. If pressure drops right off, that is a sign of a leak.