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            The heater in your Mercedes-Benz not warming things up? Maybe the air conditioner isn't blowing cold? Most likely, one or another part needs replacing -- something you should do sooner rather than later, to keep spiraling repair costs down. Good thing you came to us here at MB Part Source; we stock replacement heating and AC parts for all Mercedes-Benz models, at competitive prices. Order today, and we'll ship fast, anywhere nationwide; you'll have repairs done in no time. Contact us with any questions.

            1244404406 - : A/C Engine Harness for Mercedes-Benz Image

            A/C Engine Harness

            Mercedes-Benz 124-440-44-06
            $257.79
            MSRP $378.00
            Save $120.21
            31.8% Off
            12683501198412 - : Cover, A/C Slide for Mercedes-Benz Image

            Cover, A/C Slide

            Mercedes-Benz 126-835-01-19-8412
            $1.65
            MSRP $2.30
            Save $0.65
            28.3% Off
            4463228 - : Ects, Heater Control, AC for Mercedes-Benz Image

            Ects, Heater Control, AC

            Mercedes-Benz 0004463228
            $548.34
            MSRP $805.00
            Save $256.66
            31.9% Off
            12683501193092 - : Cover, A/C Slide for Mercedes-Benz Image

            Cover, A/C Slide

            Mercedes-Benz 126-835-01-19-3092
            $1.65
            MSRP $2.30
            Save $0.65
            28.3% Off
            8353171 - : Tank, A/C System for Mercedes-Benz Image

            Tank, A/C System

            Mercedes-Benz 000-835-31-71
            $214.88
            MSRP $316.00
            Save $101.12
            32% Off
            1311943 - : Connector, A/C Compressor for Mercedes-Benz Image

            Connector, A/C Compressor

            Mercedes-Benz 000-131-19-43
            $276.68
            MSRP $406.00
            Save $129.32
            31.9% Off
            1998360006 - : Trim, AC System for Mercedes-Benz Image

            Trim, AC System

            Mercedes-Benz 199-836-00-06
            $92.40
            MSRP $129.00
            Save $36.60
            28.4% Off
            4468350000 - : Seal, AC Housing for Mercedes-Benz Image

            Seal, AC Housing

            Mercedes-Benz 4468350000
            $30.14
            MSRP $41.00
            Save $10.86
            26.5% Off
            1300906 - : A/C Compressor Coupling for Mercedes-Benz Image

            A/C Compressor Coupling

            Mercedes-Benz 000-130-09-06
            $247.03
            MSRP $362.00
            Save $114.97
            31.8% Off
            140830208505 - : A/C Control Unit for Mercedes-Benz Image

            A/C Control Unit

            Mercedes-Benz 140-830-20-85-05
            $570.03
            MSRP $835.00
            Save $264.97
            31.7% Off
            1171340040 - : Bracket, A/C Line, Metal for Mercedes-Benz Image

            Bracket, A/C Line, Metal

            Mercedes-Benz 117-134-00-40
            $17.48
            MSRP $24.00
            Save $6.52
            27.2% Off
            2300928 - : Exchange Coupling, A/C Compressor for Mercedes-Benz Image

            Exchange Coupling, A/C Compressor

            Mercedes-Benz 000-230-09-28
            $445.20
            MSRP $655.00
            Save $209.80
            32% Off

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            Mercedes-Benz AC and Heating FAQ

            Why is the HVAC in My Mercedes-Benz Not Working Right?

            Most likely, because of low or leaking coolant, a failed heater core, a defective AC compressor, or a bad AC condenser. You'll know one from the other by some key symptoms.

            How Can I Tell if My Coolant's Low or Leaking?

            Start your engine, setting the air conditioner and fans to max/high and listening for the compressor clutch to click. If the system runs too fast, the coolant's probably low. If your Mercedes-Benz isn't due for air conditioning service anytime soon, a leak's likely.

            What are the Signs of Heater Core Failure?

            The heater not blowing warm, the interior being steamy or smoky, the smell of coolant in the car, and the engine overheating. The core's hoses are the likely problem; they're probably leaking. If you need help with this or any other repairs, get in touch with a Mercedes-Benz service center.

            How Can I Diagnose an AC Compressor Defect?

            Look, listen, and feel. If the air conditioning sounds funny, if the cabin's warmer than usual, and if the AC clutch is stuck, it's probable. You'll know a bad clutch from connecting a voltmeter and getting no reading. Other causes of compressor trouble include low refrigerant pressure, a faulty cycling switch, and a blown fuse.

            How Can I Tell if the AC Condenser in My Mercedes-Benz is Bad?

            You'll know it from the HVAC warning light being lit, from frost starting to build up, from the AC button flashing, from the system having discharge pressure issues, and from the vents not blowing cold. If no air's coming through them at all, though, the blower motor's probably gone out. Other reasons for condenser issues include a failed cooling fan and a clogged cabin air filter.