Freightliner Sprinter 3500 Windshield Washer Pump Replacement Guide (2008-2020)
A clear windshield is a must for your Sprinter; here’s how to fix a washer pump that has quit.
- A humming pump with no spray often points to a clogged filter screen at the pump's base, a very common issue on Sprinters.
- Replacement is a straightforward DIY job that can be done in under an hour with basic tools.
- Quality aftermarket pumps from brands like Trico offer a reliable, cost-effective alternative to expensive OEM parts.
- Always replace the rubber grommet seal with the pump to prevent future leaks.
Is Your Sprinter's Washer Pump Failing?
A non-functioning windshield washer system is a safety hazard, especially in poor weather. If your Sprinter's washers are weak or not working at all, the pump is a likely suspect. Diagnosing the issue is usually straightforward.
🎬 See how a pro diagnoses and repairs a failing pump.Diagnosing the Problem
Before replacing the pump, do a few quick checks:
- Listen for the Pump: Have a helper activate the washer switch while you listen near the front passenger-side wheel well. If you hear a humming sound, the pump is getting power but may be clogged or have a failed impeller. If you hear nothing, the pump motor has likely failed or there's an electrical issue.
- Check the Fuse: On many Sprinters, the washer pump shares a fuse with the wiper motor. If the wipers work when you activate the wash function, the fuse is probably good.
- Check for Clogs: A very common issue on these vans is the filter screen at the base of the pump getting clogged with a slimy buildup. If you can hear the pump running but get little to no spray, this is the most likely cause. Cleaning this filter may restore function without needing a new pump.
Choosing the Right Aftermarket Pump
When your pump has failed, you don't need to pay high dealer prices for an OEM (Original Equipment Manufacturer) part. A quality aftermarket pump can provide reliable performance for a fraction of the cost.
Aftermarket brands like Trico offer direct-fit replacement pumps that are designed to meet or exceed original specifications. They are engineered for a simple installation without any need for modification. Other brands like VDO are often the original supplier to Mercedes-Benz, meaning their aftermarket part can be identical to the one from the dealer, offering OEM quality at a lower price.
Windshield Washer Pump Replacement Cost
The cost to replace the washer pump on a Sprinter 3500 is very reasonable, especially if you do the work yourself. Aftermarket parts offer significant savings over dealer-sourced OEM parts.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Pump | $24.64 - $37.72 |
| New OEM Pump | $65 - $135+ |
| Shop Labor | $100 - $180 |
Installation Overview
Replacing the washer pump is a job most owners with basic tools can complete in under an hour.
- Access the Reservoir: The washer fluid reservoir is located in the engine bay, but the pump is accessed from underneath. You will need to safely jack up the front passenger side of the vehicle and remove the wheel.
- Remove the Wheel Liner: Remove the fasteners holding the plastic wheel well liner to gain access to the washer reservoir and pump.
- Replace the Pump: Place a bucket to catch the remaining fluid. Disconnect the electrical connector and fluid hose(s) from the old pump. The pump is press-fit into the reservoir; simply pull the old pump out, remove the old grommet, install the new grommet, and press the new pump firmly into place. 🎬 Watch this DIY walkthrough to see the pump replacement process.
- Reassemble & Test: Reconnect the hose(s) and electrical plug, then refill the reservoir and test the system before putting the wheel liner and wheel back on.
Frequently Asked Questions (FAQ)
How do I know if it's the pump or just a clogged nozzle?
If you can hear the pump running but the spray is weak or uneven, the nozzles could be clogged. Try cleaning them with a small pin. 🎬 Watch this guide on how to clear blocked washer jets. If no fluid comes out at all, disconnect the hose from the nozzle and activate the washer. If fluid sprays from the hose, the nozzle is clogged. If not, the problem is likely the pump or a clog at the pump's filter screen.
Is replacing the washer pump on a Sprinter a difficult DIY job?
No, it is generally considered an easy repair for someone with basic mechanical skills. The main task is safely lifting the vehicle and removing the wheel well liner to access the pump. The pump itself is simple to swap out.
My pump runs, but no fluid comes out. What should I check first?
First, ensure the reservoir is full. If it is, the most common issue on Sprinters is a clogged filter screen at the base of the pump. This screen gets covered in a gel-like substance from old fluid. You will need to remove the pump to access and clean or replace the grommet/filter.
Do I need any special tools to replace the pump?
No special tools are required. You will need a jack, jack stands, a lug wrench for the wheel, and basic hand tools like a socket set or screwdrivers to remove the wheel liner fasteners.
Helpful Videos
Technical Specifications
OEM Part Numbers: 2218690121
Press-fit installation into the washer fluid reservoir. Typically includes one electrical connector and one or two hose ports.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Freightliner Sprinter 3500: