In this guide, you will find instructions on how to recharge BMW Air Conditioner (AC) with R134a refrigerant (freon). Follow the step-by-step instructions below and make sure to watch the how-to video as well.
If your BMW blows hot air but no cold air, it may be an indication that the A/C system is low on refrigerant. Even though other problems can cause a BMW to stop blowing cold air, low refrigerant due to is often the problem. Recharging BMW 5-Series AC system with freon will sometimes fix the problem. The good news is that you can recharge a BMW 5-Series A/C with freon yourself.
Before you start
What you will need
Start the engine and let it idle.
Turn on A/C
Ensure vehicle is in Park.
With the engine running turn on the air conditioner system on your car.
Set the temperature to MIN
and blower fan speed to MAX
. Make sure the A/C button is pressed or is switched ON.
Pull the hood release under the dashboard. Secure the hood in the up position. Ensure the hood does not fall down on you while you are charging your BMW 5-Series with refrigerant.
Watch a video on
Locate A/C Port
Locate the low-pressure air conditioner charging port. Remove cap from the A/C charging port.
Connect the a/c recharge kit
to the low-pressure line. With the engine running take a reading and ensure the refrigerant pressure is low zone.
Connect the A/C recharge kit
, start the car. With the A/C recharge kit
connected read the gauge. Continue to the next if the A/C pressure reading is low.
With the engine running, recharge the A/C system until the reading falls within the 45 and 55 psi. Make sure to follow the instructions on the back of the A/C recharge kit
Check A/C System
Once you reach the recommended pressure level stop adding refrigerant to your BMW 5-Series AC. Overcharging a BMW 5-Series A/C with refrigerant does not make the air blow colder air and can cause damage to the air conditioner system.
BMW AC Recharge Cost
The average cost to recharge BMW AC system is between $90 and $150.
Note that this is the cost to top off a system that may have a small leak.
If your BMW AC system is completely empty and needs to be filled with R134 refrigerant, the cost will be between $150 and $300 depending on the refrigerant capacity of your BMW.