2025 Mercedes-Benz Sprinter Bulb Size Guide

Quick Reference Bulb Size Chart

Note: Higher trim levels of the 2025 Sprinter may feature full LED headlights and tail lights. In such cases, the "bulbs" are not user-replaceable and require a full assembly replacement.

LED vs. Halogen Upgrade Considerations

Upgrading your 2025 Sprinter's halogen bulbs to LEDs can provide brighter, longer-lasting light. However, there are a few things to keep in mind:

• CANBUS Errors: The Sprinter's computer system (CANBUS) monitors the electrical current of the lighting system. Since LEDs draw less power than halogen bulbs, the system may think a bulb is burnt out, leading to a "bulb out" warning on your dashboard. To prevent this, you'll need to install "CANBUS-ready" LEDs or add a resistor to the circuit.
• Adapters: Some LED bulbs may not fit directly into the stock halogen housing. You might need an adapter to ensure a secure fit.
• Beam Pattern: When upgrading headlights, it's crucial to choose LED bulbs that are designed to mimic the filament placement of a halogen bulb. This will ensure a proper beam pattern that illuminates the road without glaring other drivers.

How to Replace Each Bulb

• Headlights (Low and High Beam): Access the back of the headlight assembly from under the hood. Twist the dust cover off, release the retaining clip, and swap the bulb.
• Fog Lights: These are typically accessed from under the front bumper or through the wheel well liner.
• Front Turn Signal: Similar to the headlights, this bulb is located in the main headlight assembly.
• Rear Turn Signal, Brake, Tail, and Reverse Lights: These bulbs are all located in the rear tail light assembly. Access is through a panel in the cargo area.
• License Plate Light: The housing for this bulb is on the exterior of the vehicle, above the license plate. A small screwdriver is usually needed to release the clip.
• Side Markers: The front side marker is in the headlight assembly. The rear is an integrated LED.
• Dome and Map Lights: Use a plastic trim removal tool to gently pry off the lens cover.

Common Lighting Issues for This Generation

The 2025 Sprinter is a new model, but based on previous generations, here are some potential lighting issues to watch for:

• Premature Bulb Burnout: This can be caused by voltage irregularities or excessive vibration. If you're replacing bulbs frequently, have a technician check the charging system.
• Condensation in Headlight Housings: While the housings are sealed, the seals can fail over time, allowing moisture to enter. If you notice condensation, it's best to have the assembly resealed or replaced.
• CANBUS Errors with Aftermarket Bulbs: As mentioned above, the Sprinter's sensitive electrical system can be finicky with non-OEM bulbs.

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