Why are my Mercedes GLE headlights dim, or the ride so stiff?

Short answer: Dim GLE headlights are usually aging bulbs, cloudy lenses, or daytime running lights mistaken for headlights. A stiff ride on AMG models is mostly by design, and owners warn against lowering tire pressure below spec to soften it.

Symptom: The headlights look weak at night, or the ride feels harsh.

What to check first

1. Turn the headlights on manually and compare.
2. Check bulb age and lens clarity.
3. Check tire pressure against the door sticker.
4. Look for leaks or damage on suspension parts.

Likely causes

1. Weak bulbs. Bulbs dim with age.
2. Daytime running lights mistaken for headlights. Daytime running lights are dimmer than headlights. If the switch is on auto, check that the headlights actually come on.
3. Cloudy lenses. Plastic lenses yellow and scatter light.
4. Tire pressure and performance suspension. AMG models ride firm. Lowering tire pressure below the door-sticker spec isn't the fix.

What it usually costs

Owners didn't post prices.

Is it safe to keep driving?

Dim headlights reduce night visibility. Fix them soon. Underinflated tires can overheat and fail.

DIY or shop?

Bulbs, lens restoration and tire pressure are DIY.

Recalls, bulletins and complaints in plain words

• Related recalls: NHTSA lists 16V759000 (some 2016-2017 GLE 300d, 350 and 400 built October 14 to November 23, 2015: the low beam headlights may not be adjusted properly) and 21V509000 (some 2020-2021 GLE350 and GLE450 and other models: LED headlights may have been adjusted wrong during a repair). If your headlights seem dim or aimed low, these are worth checking. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 125 keyword-matched complaints for Mercedes-Benz GLE 2016–2020 (of 397 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-28; keywords: ride, suspension, stiff, headlight, light, dim). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In 2016 Mercedes-Benz GLE - Dim headlights on Car Talk, a 2016 GLE owner found the headlights dim. Members suggested checking bulbs, making sure the headlights and not just daytime running lights were on, and looking for cloudy lenses.
• In 2019 Mercedes-Benz GLE - Stiff Ride on Car Talk, a 2019 AMG GLE43 owner complained of a stiff ride. Members said not to drop tire pressure below the door-sticker spec (they cited 44 front and 47 rear psi for that car).

Quick tip

Don't lower tire pressure for comfort. The tires need it.

Vehicle focus: Mercedes-Benz GLE, 2016-2020, including AMG GLE43.

Safety / mechanic note

Lighting and tires are safety items. Verify with a mechanic.