How can I make my 420SEL air conditioner colder?

Park in the shade whenever you can, and use a reflective sunshade in the windshield when you’re parked. If you’re the only one in the car, close all the vents except the ones that point toward you. Give the system the final boost it needs with an A/C performance check and recharge from Firestone Complete Auto Care.

What’s making my 420SEL A/C put out warm air?

Maybe your A/C starts cool but then gets warm. Or maybe it never gets cold in the first place. Either way, your A/C troubles could be traced back to a clogged expansion valve, faulty compressor clutch, blown fuse, or leak.

How does my A/C system get a leak?

Over the years, the rubber seals and gaskets in your 420SEL’s A/C system naturally degrade. Moisture can get into the system and cause a malfunction, or parts can simply wear out so that your system no longer seals properly.

Does the A/C in my 420SEL use gas?

While your vehicle’s A/C system doesn’t directly use fuel, it does draw power from the engine, which can impact the fuel consumption of your 420SEL.

Why does the A/C in my 420SEL smell like vinegar?

If the air conditioning in your 420SEL smells like vinegar, it could be due to bacteria growth on system components such as the evaporator and heater cores. Bacteria can grow when moisture accumulates on air conditioning system components, providing a breeding ground for microorganisms.

Why won’t my 420SEL’s A/C cool the vehicle when the car is stopped?

There could be issues with one or more components in the air conditioning or electrical system. Your 420SEL may have a faulty cooling fan or low refrigerant.

Where can I go for 420SEL A/C repair near me?

Firestone Complete Auto Care has decades of experience inspecting and repairing 420SEL air conditioning systems. Schedule an A/C repair appointment at one of our locations near you today.

Nearest A/C Repair for Your 1990 Mercedes-Benz 420SEL

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Schedule Your Mercedes-Benz 420SEL A/C Service

Chill out. Our technicians are trained to inspect and repair 1990 Mercedes-Benz 420SEL A/C systems. Stop by today to enjoy some free air conditioning and an A/C performance check.

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A/C Service for Mercedes-Benz 420SEL

When you get in the car on a hot summer day, the last thing you want is a broken air conditioner. Your steering wheel feels like lava. Your skin sticks to the driver’s seat. You wipe your brow and wonder, "Who can fix the A/C in my Mercedes-Benz 420SEL?" Firestone Complete Auto Care — that’s who! We’ve got experience with Mercedes-Benz vehicles, and our trained technicians can identify and repair issues with 1990 Mercedes-Benz A/C systems. Come to your local Firestone Complete Auto Care in your Mercedes-Benz 420SEL

During this initial A/C performance check, we’ll look at the state of your 1990 Mercedes-Benz 420SEL’s A/C system to see if repair work is required. This check will include an examination of system pressure, a visual inspection, and a leak test. If we suspect a leak, we’ll send a U/V dye through your A/C system or use a “sniffer” to find the leak. A "sniffer" is a machine that's run along parts of your Mercedes-Benz 420SEL A/C system that can detect any refrigerant fumes that might be leaking out from the system. If your A/C system has a leak, we’ll find and repair it.

Recharge the A/C in Your 420SEL

Let's say we repair your 1990 Mercedes-Benz 420SEL A/C system. We will also perform an A/C evacuation and recharge. To do this, one of our technicians will remove the refrigerant in your A/C system (if there is even any left to remove). Then, they’ll perform an evacuation (also known as a discharge) on the entire system per Mercedes-Benz guidelines. To finish, we’ll add new refrigerant to recharge the A/C system, and once the technician tests the cool blast for themselves, you’re all set. Our technicians are trained to efficiently perform 1990 Mercedes-Benz 420SEL A/C recharges.

Common Mercedes-Benz 420SEL A/C Problems

Hot air is a common Mercedes-Benz 420SEL A/C problem, but it’s not the only issue you might encounter. Other common A/C problems include weak airflow, which could be caused by mold or mildew buildup, a loose hose, an old ventilation fan, or a compromised seal. If your A/C system blows cold air first but then it turns warm, this can mean there’s a malfunctioning compressor clutch, a leak, or a blown fuse. And smelly A/C in a 1990 Mercedes-Benz 420SEL? This can mean you have mold in your evaporator case, or it may indicate that it’s time to change your cabin air filter. Technicians at Firestone Complete Auto Care are ready to help you address your A/C problems. So, chill out. We're here to help you get the blast back in your 420SEL’s A/C!

1990 Mercedes-Benz 420SEL A/C System FAQs

How can I make my 420SEL air conditioner colder? Park in the shade whenever you can, and use a reflective sunshade in the windshield when you’re parked. If you’re the only one in the car, close all the vents except the ones that point toward you. Give the system the final boost it needs with an A/C performance check and recharge from Firestone Complete Auto Care.
What’s making my 420SEL A/C put out warm air? Maybe your A/C starts cool but then gets warm. Or maybe it never gets cold in the first place. Either way, your A/C troubles could be traced back to a clogged expansion valve, faulty compressor clutch, blown fuse, or leak.
How does my A/C system get a leak? Over the years, the rubber seals and gaskets in your 420SEL’s A/C system naturally degrade. Moisture can get into the system and cause a malfunction, or parts can simply wear out so that your system no longer seals properly.
Does the A/C in my 420SEL use gas? While your vehicle’s A/C system doesn’t directly use fuel, it does draw power from the engine, which can impact the fuel consumption of your 420SEL.
Why does the A/C in my 420SEL smell like vinegar? If the air conditioning in your 420SEL smells like vinegar, it could be due to bacteria growth on system components such as the evaporator and heater cores. Bacteria can grow when moisture accumulates on air conditioning system components, providing a breeding ground for microorganisms.
Why won’t my 420SEL’s A/C cool the vehicle when the car is stopped? There could be issues with one or more components in the air conditioning or electrical system. Your 420SEL may have a faulty cooling fan or low refrigerant.
Where can I go for 420SEL A/C repair near me? Firestone Complete Auto Care has decades of experience inspecting and repairing 420SEL air conditioning systems. Schedule an A/C repair appointment at one of our locations near you today.