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<h2>What is a blend door actuator?</h2>The blend door actuator is a crucial component in a vehicle's climate control system, tasked with regulating the temperature of air entering the cabin. This electronic actuator employs a small motor to meticulously position a blend door, which manages the blend of hot and cold air. Integrated with the HVAC system, the actuator receives signals from the vehicle's computer to adjust the door for the desired temperature. Engineered with longevity in mind, the blend door actuator offers dependable, long-lasting performance, enabling the climate control system to deliver precise temperature adjustments throughout the lifetime of the vehicle.<h2>Bad blend door actuator symptoms</h2><ul><li>Wrong temperature - The blend door actuator's inability to properly regulate the hot/cold air mixture leads to the cabin temperature being inaccurate or unstable.</li><li>Knocking - Mechanical issues with the actuator's internal components can cause a knocking or clicking sound to emanate from the dashboard area.</li><li>Production of noise from the dashboard - Malfunctions in the actuator may generate audible noises originating from the dashboard where the component is located.</li><li>Unreliable airflow - A failing actuator cannot precisely control the blend door, resulting in inconsistent or unpredictable airflow being delivered to the cabin.</li><li>Unpredictable temperature - Without the actuator's ability to accurately regulate the temperature, the air reaching the passengers will fluctuate in warmth or coolness.</li><li>Frozen blend doors - In extreme cases, a malfunctioning actuator can cause the blend doors to become stuck in a fixed position, and unable to adjust.</li><li>Wear and tear - Over time, the normal wear and tear on the actuator's internal mechanisms can degrade its performance and reliability.</li></ul><h2>Explore A-Premium car parts</h2>A-Premium's blend door actuator is engineered to deliver exceptional climate control capabilities for your vehicle. Crafted with high-quality materials, this actuator operates smoothly and quietly, seamlessly adjusting the blend door to maintain your desired cabin temperature. Our commitment to you extends beyond just a 90-day return window and a 3-year warranty - our customer service team is on hand 24 hours a day, 7 days a week to address your needs. Experience the difference with the A-Premium Blend Door Actuator &ndash; Engineered for Precise Climate Control.

Blend Door Actuator

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

Air Flow Sensor

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Air Intake Duct

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Air Intake Hose

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Air Intake Manifold Actuator Control Solenoid

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Air Intake Manifold Flap Adjuster

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Air Intake Manifold Runner Control Sensor

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Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

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Intake Manifold Flap Actuator

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Intercooler

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Throttle Position Sensor

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Turbocharger

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

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Camshaft Timing Gear

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Camshafts

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Engine Valve Cover

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Harmonic Balancer

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Timing Belt Kit

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

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Oil Cooler

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Oil Cooler Line

Oil Filler Cap

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Oil Filter

Oil Filter Base

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

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Glow Plug Relay Module

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Ignition Coil

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Ignition Coils & Spark Plugs Kits

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Ignition Distributor

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Ignition Starter Switch

Ignition Switch Actuator

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Hose

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Engine Mounts

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Catalytic Converter

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EGR Valve

Emissions Fluid Pump

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

Fuel Injector Kit

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Pump

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Fuel Sending Unit

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Fuel Tank Filler Neck Pipe

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Fuel Tank Strap

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Audi S4 Blend Door Actuator