Engine Auxiliary Water Pump
- Mfg Part #
- 0005003600 0005003600
- ECS Part #
- ES#5506682
- Brand
-
Product Details
The latest generation of Mercedes-Benz engines—such as the turbocharged 2.0L M260 found in the A220 and GLB250, or the 3.0L inline-6 M256 with EQ Boost found in the E450 and AMG GT 53—utilize incredibly advanced thermal management systems. To keep everything operating at the perfect temperature, your vehicle relies on an electric Engine Auxiliary Water Pump.
Unlike older mechanical water pumps, this electric pump runs independently of engine speed. Depending on your specific model, the engine computer uses this pump to push coolant through the heater core at low RPMs, circulate fluid through the auxiliary radiators, or cool the expensive 48V mild-hybrid battery system. Crucially, this pump also continues to circulate coolant through the turbocharger after you turn the engine off, preventing extreme heat from baking the oil and destroying the turbo bearings. Over time, the internal electric motor can burn out, or the plastic housing can crack and leak.
Common Signs of a Failing Auxiliary Water Pump:
Inconsistent Cabin Heating: If the pump fails to push hot coolant into the cabin, your heater may suddenly blow cold air when sitting at a stoplight, only getting warm again when you accelerate.
Overheating & Dashboard Warnings: A failed pump will restrict coolant flow to auxiliary radiators or the hybrid battery cooling circuit, triggering warning messages or elevated temperature gauges, especially in stop-and-go traffic.
Coolant Leaks: The plastic housing and internal seals become brittle from years of heat cycling, resulting in visible pink or blue coolant pooling on your splash shield or driveway.
Loud Whining Noises: A failing internal electric motor or broken impeller will often emit a loud, high-pitched whine from the engine bay after the vehicle is shut off.
ECS Tuning Recommends for Modern Mercedes Owners: Do not ignore a failing auxiliary water pump! If it stops circulating coolant to your turbocharger after shutdown, you risk catastrophic turbo failure. Replacing this pump is a critical maintenance item.
Tech Tip: Modern Mercedes-Benz cooling systems are incredibly complex and prone to trapping air. You cannot simply pour coolant into the reservoir and let the engine run. You must use a vacuum coolant filler to draw the system into a vacuum before introducing fluid. Failing to do so will leave air pockets in the system, which will cause the new electric pump to cavitate and instantly burn out.
Essential Tools & Hardware for the Job
Replacing the auxiliary water pump on your modern Mercedes is a straightforward bolt-on job, but properly refilling the cooling system requires the right equipment. We highly recommend adding these items to your ECS Tuning cart before starting the repair:
Schwaben Coolant Vacuum Purge and Refill Tool (ECS Part #: ES#2712048): (CRITICAL) This pneumatic tool uses your air compressor to pull the entire cooling system into a deep vacuum, allowing you to completely refill the system with zero air pockets.
Genuine Mercedes-Benz Antifreeze/Coolant: You will lose coolant when detaching the hoses from the old pump. Ensure you have the correct factory-spec concentrated coolant on hand to top the system off safely.
Schwaben Remote Hose Clamp Pliers (ECS Part #: ES#2702616): The auxiliary pump uses heavy-duty spring clamps that are often tucked into tight spaces. These remote cable pliers allow you to easily lock the clamps open from a distance without destroying your knuckles.
- 0005003600
- 000500360080
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Year | Chasis | Special Fitment Notes |
|---|---|---|---|---|---|---|
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2019 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2019 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2019 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2019 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2019 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2019 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2019 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2020 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2020 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2020 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2020 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2020 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2020 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2020 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2021 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2021 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2021 | 177.144 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2021 | 177.145 | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | 4Matic | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | Base | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | A220 | All | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | AMG GT 43 | Base | L6 3.0L 256.930 | 2022 | 290.659 | Use vehicle selector to confirm fitment |
| Mercedes Benz | AMG GT 53 | Base | L6 3.0L 256.930 | 2022 | 290.661 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS450 | 4Matic | L6 3.0L 256.930 | 2022 | 257.359 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E450 | 4Matic | L6 3.0L 256.930 | 2021 | 213.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E450 | 4Matic | L6 3.0L 256.930 | 2021 | 213.260 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E450 | 4Matic | L6 3.0L 256.930 | 2021 | 238.459 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E450 | Base | L6 3.0L 256.930 | 2021 | 238.358 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E450 | Base | L6 3.0L 256.930 | 2021 | 238.458 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | 4Matic | L4 2.0L 260.920 | 2021 | 247.747 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | Base | L4 2.0L 260.920 | 2021 | 247.746 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2021 | 247.746 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2021 | 247.747 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | 4Matic | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | Base | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | 4Matic | L4 2.0L 260.920 | 2022 | 247.747 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | Base | L4 2.0L 260.920 | 2022 | 247.746 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2022 | 247.746 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2022 | 247.747 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | 4Matic | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | Base | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA250 | All | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLA35 AMG | 4Matic | L4 2.0L 260.920 | 2022 | 247.751 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | 4Matic | L4 2.0L 260.920 | 2021 | 247.647 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | Base | L4 2.0L 260.920 | 2021 | 247.646 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2021 | 247.646 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2021 | 247.647 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | 4Matic | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | Base | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2021 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | 4Matic | L4 2.0L 260.920 | 2022 | 247.647 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | Base | L4 2.0L 260.920 | 2022 | 247.646 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2022 | 247.646 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2022 | 247.647 | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | 4Matic | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | Base | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB250 | All | L4 2.0L 260.920 | 2022 | All | Use vehicle selector to confirm fitment |
| Mercedes Benz | GLB35 AMG | 4Matic | L4 2.0L 260.920 | 2022 | 247.651 | Use vehicle selector to confirm fitment |
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Return and Exchanges
Need to set up a return? Click here to begin: Return Process
All you need is your order number and email address.
New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
Want to know more about our Lifetime Replacement program?
Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
Hurry, limited stock available!
Prop 65 Warning