What is the low beam headlight bulb size for a 1998 Mercedes-Benz SL500?

The 1998 Mercedes-Benz SL500 uses a 9004 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1998 Mercedes-Benz SL500?

The high beam bulb size for the 1998 Mercedes-Benz SL500 is H1.

Why are my 1998 Mercedes-Benz SL500 headlights dim?

Dim headlights on a 1998 Mercedes-Benz SL500 can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9004 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1998 Mercedes-Benz SL500 fog light?

The 1998 Mercedes-Benz SL500 uses a H1 bulb for the fog light position.

Is the 1998 Mercedes-Benz SL500 single or dual beam?

The 1998 Mercedes-Benz SL500 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1998 Mercedes-Benz SL500?

Yes, the 1998 Mercedes-Benz SL500 comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9004 LED conversion kit for the low beams.

Does the 1998 Mercedes-Benz SL500 have fog lights?

Yes, the 1998 Mercedes-Benz SL500 takes a H1 bulb for the fog light position.

Did the 1998 Mercedes-Benz SL500 change headlight bulb sizes from the previous year?

Yes — the 1998 Mercedes-Benz SL500 uses different bulb sizes than the 1997 model. The 1998–1999 generation introduced this bulb configuration.

Is the 1998 Mercedes-Benz SL500 the first or last year to use 9004 bulbs?

The 1998 Mercedes-Benz SL500 is the first year in the 1998–1999 generation to use the 9004 bulb for the low beam headlight.

How do I change the headlight on a 1998 Mercedes-Benz SL500?

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 9004 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 1998 Mercedes-Benz SL500?

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 9004 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 1998 Mercedes-Benz SL500 headlights?

A pair of halogen 9004 bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. 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 1998 Mercedes-Benz SL500?

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 9004 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 1998 Mercedes-Benz SL500 is the first model year to use this bulb configuration (1998–1999).

Fitment Guaranteed for 1998 Mercedes-Benz SL500

What Size Bulbs Does a 1998 Mercedes-Benz SL500 Use?

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

Installation Difficulty

Hard (Tight clearances)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 1998 Mercedes-Benz SL500 Have?

When it comes to nighttime visibility, the 1998 Mercedes-Benz SL500 relies on an arrangement of 4 specialized bulbs. It features a standard lighting system powered by a dual-bulb halogen configuration using separate 9004 low beam and H1 high beam bulbs for precise light distribution. This model belongs to the mid years of the SL500's 1994-2006 production span. 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 1998 Mercedes-Benz SL500?

Upgrading to LED is one of the most effective ways to modernize your Mercedes-Benz's appearance and safety profile. We recommend starting your upgrade with the 9004 low beams, as they see the most use. Adding a matching H1 LED kit later will complete the look and ensure consistent lighting performance. Because Mercedes-Benz utilizes a CANbus system, standard LED bulbs may cause "bulb out" errors on your dashboard. Always opt for "Error-Free" or CANbus-ready kits which include the necessary resistors. Don't forget the H1 fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

1998 Mercedes-Benz SL500 Bulb Size Chart

Position	Bulb Size	Shop
Fog Light	H1	Buy H1 →
High Beam	H1	Buy H1 →
Low Beam	9004	Buy 9004 →
Side Marker	W5W	Buy W5W →

How do the 1998 Mercedes-Benz SL500's bulbs compare to other years?

The 1998 Mercedes-Benz SL500 changed bulb sizes from 1997. The previous model year used a different configuration.

The 1999 model continues with the same bulb sizes.

This bulb configuration covers the 1998–1999 model years. ← 1997 1999 →

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Other SL500 Years

2006 2005 2004 2003 2002 2001 2000 1999 1997 1996 1995 1994

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