What is the low beam headlight bulb size for a 2001 Mercedes-Benz Benz ML320?

The 2001 Mercedes-Benz Benz ML320 uses a HID-D2R LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2001 Mercedes-Benz Benz ML320?

The high beam bulb size for the 2001 Mercedes-Benz Benz ML320 is H1 LED.

Why are my 2001 Mercedes-Benz Benz ML320 headlights dim?

Dim headlights on a 2001 Mercedes-Benz Benz ML320 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a HID-D2R LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2001 Mercedes-Benz Benz ML320 fog light?

The 2001 Mercedes-Benz Benz ML320 uses a H3 LED bulb for the fog light position.

Is the 2001 Mercedes-Benz Benz ML320 single or dual beam?

The 2001 Mercedes-Benz Benz ML320 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2001 Mercedes-Benz Benz ML320?

Yes, the 2001 Mercedes-Benz Benz ML320 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D2R LED LED conversion kit for the low beams.

Does the 2001 Mercedes-Benz Benz ML320 have fog lights?

Yes, the 2001 Mercedes-Benz Benz ML320 takes a H3 LED bulb for the fog light position.

Did the 2001 Mercedes-Benz Benz ML320 change headlight bulb sizes from the previous year?

Yes — the 2001 Mercedes-Benz Benz ML320 uses different bulb sizes than the 1998 model. The 2001 generation introduced this bulb configuration.

Is the 2001 Mercedes-Benz Benz ML320 the first or last year to use HID-D2R LED bulbs?

The 2001 Mercedes-Benz Benz ML320 is the only year in the 2001 generation to use the HID-D2R LED bulb for the low beam headlight.

How do I change the headlight on a 2001 Mercedes-Benz Benz ML320?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old HID-D2R LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. Note: Mercedes-Benz vehicles use a CANbus system, so LED replacements may need an anti-flicker decoder. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2001 Mercedes-Benz Benz ML320?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved HID-D2R LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2001 Mercedes-Benz Benz ML320 headlights?

A pair of HID HID-D2R LED bulbs costs $50 to $150. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2001 Mercedes-Benz Benz ML320?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the HID-D2R LED position are available as direct plug-and-play replacements. Since the Mercedes-Benz uses CANbus monitoring, choose a CANbus-compatible LED kit to avoid dashboard errors.

The 2001 Mercedes-Benz Benz ML320 has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 2001 Mercedes-Benz Benz ML320

What Size Bulbs Does a 2001 Mercedes-Benz Benz ML320 Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Hard (Tight clearances)

Est. Replacement Cost

$50 - $150 (HID System)

What Lighting System Does the 2001 Mercedes-Benz Benz ML320 Have?

Lighting on the 2001 Mercedes-Benz Benz ML320 is managed by a total of 13 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D2R projector housings for high-intensity output. Note that Mercedes-Benz vehicles typically feature a CANbus electrical monitor that checks for specific bulb resistance.

LED Flicker Warning

This vehicle is known to use a CANbus system. Installing standard LEDs may cause flickering.

Use a CANbus decoder.

Can You Put LED Bulbs in a 2001 Mercedes-Benz Benz ML320?

The 2001 Mercedes-Benz Benz ML320 is already equipped with factory D2R HID/Xenon headlights. Since HID technology already provides exceptional brightness, we recommend staying with high-quality OEM replacement bulbs rather than attempting an LED retrofit for the primary headlights. However, the H3 LED fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.

2001 Mercedes-Benz Benz ML320 Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	HID-D2R LED	Buy HID-D2R LED →
High Beam	H1 LED	Buy H1 LED →
Fog Light	H3 LED	Buy H3 LED →
Brake Light	7506 LED	Buy 7506 LED →
Side Marker	7225 LED	Buy 7225 LED →
Turn Signal Front	2825 LED	Buy 2825 LED →
Turn Signal Rear	12496 LED	Buy 12496 LED →
Reverse Light	7506	Buy 7506 →
Dome Light	6411	Buy 6411 →
License Plate	6418	Buy 6418 →
Map Light	6411	Buy 6411 →
Parking Light	1157NA	Buy 1157NA →
Trunk Light	6411	Buy 6411 →

How do the 2001 Mercedes-Benz Benz ML320's bulbs compare to other years?

The 2001 Mercedes-Benz Benz ML320 changed bulb sizes from 1998. The previous model year used a different configuration.

This bulb configuration covers the 2001 model years. ← 1998

Finding the best installation guide...

Other Benz ML320 Years

1998

More from Mercedes-Benz

190D 190E 200 200D 220 220D 230 230S

Other Vehicles That Use HID-D2R LED Bulbs

2019 Nissan Sentra 2016 Subaru Crosstek 2016 Subaru Impreza 2013 Nissan Rogue 2013 Subaru Forester 2010 Infiniti QX56