Cadillac SRX Climate Control Problems [4 Issues & Fixes]

In this post, I’ll explain the common climate control issues you may experience in your Cadillac SRX and how you can resolve them.

You’ll also learn how to prevent the car from developing climate control issues in the future.

Cadillac SRX

Cadillac SRX Climate Control Problems

1. AC blows more air when the temperature is decreased

If your Cadillac SRX climate control system blows more air when you reduce the temperature in the car, the system is problematic. This problem might point to a functional error in your climate control system.

To fix this issue, you’ll need to disconnect your vehicle’s battery for 5 minutes. Once you reconnect the battery to your car, turn on your AC and lower the temperature. Your AC should blow less air now.

2. AC keeps blowing warm air

One common sign of a faulty climate control system in a Cadillac SRX is that the AC may blow warm air. The most likely reason for this issue is a low refrigerant level in your AC. Refrigerant is the gas your AC uses to convert the air in your climate control system into cold air.

If you’ve been using your Cadillac SRX for over three years, you’ve probably run out of refrigerant. As such, you’ll need to refill your AC with more refrigerant. Ask your auto technician to recharge your AC.

If you’d prefer to recharge the AC yourself, you must use the r134a or r123a refrigerant. This is because these refrigerant types are less toxic than other variants.

Your AC should resume blowing cold air after you’ve recharged your AC. But if the system is still blowing warm air, your AC might be overcharged.

If the refrigerant in your AC is too much, some of the gas may get stuck in your compressor. This excess refrigerant may weaken the compressor and reduce its performance.

Without a functional compressor, your AC won’t get the refrigerant it needs to cool air. This may cause the system to release warm air.

How do you know your AC is overcharged? General Motors indicates the correct pressure for charging your AC in the Cadillac SRX user manual. If your refrigerant pressure exceeds the recommended pressure, you have an overcharged AC.

As such, you’ll need to drain some of the gas in your AC. But first, you should confirm that your refrigerant pressure is too high. If the refrigerant pressure exceeds the correct pressure, release some of the gas into a rag.

You can measure your refrigerant pressure by connecting a pressure gauge to the low-pressure port in your car. Search for your low-pressure port at the front of your engine. The port is often located between the compressor and the condenser.

A blown HVAC fuse can also cause your AC to blow warm air. This is because the HVAC fuses provide the electrical current the condenser requires to function.

Your condenser is essential to the production of cool air in your AC. It converts refrigerant gas to liquid so that it can collect heat easily from the warm air in the system.

If your AC keeps blowing warm air, you’ll need to inspect your HVAC fuses. Replace the fuses if they seem damaged.

You’ll find one of your HVAC fuses in the instrument panel fuse block on the driver’s side. The other fuse is located in the under-hood fuse box.

3. Poor airflow

If your climate control system only blows little air when you turn it on, the system might be faulty. A clogged cabin air filter usually causes this problem.

Your cabin air filter purifies the air in your climate control system before it enters your car. Over time, the dust collected by the filter may get stuck in it, thus blocking the space for air to flow. As such, your blower motor will only be able to blow air through the open spaces in the cabin air filter.

To resolve this issue, you’ll need to clean your cabin air filter. The cabin air filter in your Cadillac SRX car is located behind the glove box.

Another reason your climate control system may not blow properly is a dirty evaporator.

When air leaves the cabin air filter, it moves to the evaporator. If your cabin filter fails to collect the dirt in the air, the debris may stick to the evaporator. This dirt might block the passage of air that flows through the evaporator, thus letting only a little air reach your seats.

Consider cleaning your evaporator if your AC isn’t blowing enough air after you’ve cleaned your air filter.

Please note that you’ll need to remove your entire dashboard to take out your evaporator. So, it’s best to hire a professional to clean the evaporator instead of doing it yourself.

A bad blower motor can also restrict airflow from your climate control system.

Your blower motor collects air from your climate control system and releases it through your vents. If your blower motor develops a fault, it might only be able to blow a short quantity of air at a time.

Replace your blower motor to fix this issue. Your blower motor is located below your passenger’s side dashboard.

4. AC blows warm air on the passenger’s side and cold air on the driver’s side

You can tell that your climate control system is bad if it blows warm air on the passenger side and cold air on the driver’s side. The usual culprit for this problem is a faulty blend door actuator.

Your climate control system has two blend door actuators. Each of these actuators controls either side of the car: the passenger’s side and the driver’s side.

When you select a temperature on your climate control module, each blend door actuator ensures that the vents on its side blow air to match your preferred temperature.

If only your passenger’s side vents are blowing warm air, it means that the passenger blend door actuator is faulty. Your climate control system should be back to normal once you replace this actuator.

Search behind the glove box on the passenger’s side to find your passenger blend door actuator.

Cadillac SRX Models with the Most Climate Control Problems

Here are the Cadillac SRX models with the most climate control issues:

  • 2011 Cadillac SRX–6
  • 2012 Cadillac SRX–5
  • 2004 Cadillac SRX

Carcomplaints.com states that the 2011 Cadillac SRX is the most notorious model for climate control issues. Other Cadillac SRX models with a high number of AC and heater issues are the 2004 and the 2012 models.

While the 2004 Cadillac SRX received four complaints about climate control issues, the 2012 model got five reports about its climate control system.

Cadillac SRX Models with the Fewest Climate Control Problems 

The Cadillac SRX models with the fewest AC/heater issues are:

  • 2017 Cadillac SRX
  • 2016 Cadillac SRX
  • 2015 Cadillac SRX
  • 2014 Cadillac SRX
  • 2009 Cadillac SRX
  • 2008 Cadillac SRX
  • 2006 Cadillac SRX
  • 2005 Cadillac SRX.

According to carcomplaints.com, no user of the models listed above reported any climate control issues.

Tips to Prevent Cadillac SRX Climate Control Problems

The following tips will help you prevent climate control issues in your Cadillac SRX car:

  • Wash your car every day.
  • Clean your air filters at least once a month.
  • Recharge your AC every three years.
  • Use only the r134a or R123a when recharging your AC.
  • Always park your car under a shade.

Related Resources:

Wrapping Up

The solutions provided here should fix your climate control issues permanently. If you need to replace a component and can’t remove it from your car, contact your dealer.