What is the low beam headlight bulb size for a 2015 Cadillac ELR?

The 2015 Cadillac ELR uses a LED Headlights bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2015 Cadillac ELR?

The high beam bulb size for the 2015 Cadillac ELR is LED Headlights.

Why are my 2015 Cadillac ELR headlights dim?

Dim headlights on a 2015 Cadillac ELR can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a LED Headlights LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2015 Cadillac ELR fog light?

The 2015 Cadillac ELR uses a LED Fog Light bulb for the fog light position.

Is the 2015 Cadillac ELR single or dual beam?

The 2015 Cadillac ELR uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

Can I install LED bulbs on my 2015 Cadillac ELR?

Yes, the 2015 Cadillac ELR comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a LED Headlights LED conversion kit for the low beams.

Does the 2015 Cadillac ELR have fog lights?

Yes, the 2015 Cadillac ELR takes a LED Fog Light bulb for the fog light position.

Did the 2015 Cadillac ELR change headlight bulb sizes from the previous year?

No — the 2015 Cadillac ELR uses the same bulb sizes as the 2014 model. This configuration has been consistent across the 2014–2016 generation.

How do I change the headlight on a 2015 Cadillac ELR?

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 LED Headlights bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2015 Cadillac ELR?

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 LED Headlights 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 2015 Cadillac ELR headlights?

A pair of halogen LED Headlights 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 2015 Cadillac ELR?

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 LED Headlights position are available as direct plug-and-play replacements.

The 2015 Cadillac ELR shares its bulb sizes with the 2014–2016 generation.

Fitment Guaranteed for 2015 Cadillac ELR

What Size Bulbs Does a 2015 Cadillac ELR Use?

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

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

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

What Lighting System Does the 2015 Cadillac ELR Have?

Lighting on the 2015 Cadillac ELR is managed by a total of 13 bulbs, covering everything from primary headlights to signal indicators. It features an extensive lighting system powered by factory-integrated LED technology, which offers superior longevity and a modern cool-white appearance compared to traditional bulbs. This model belongs to the mid years of the ELR's 2014-2016 production span.

Can You Put LED Bulbs in a 2015 Cadillac ELR?

Upgrading to LED is one of the most effective ways to modernize your Cadillac's appearance and safety profile. Since your ELR uses a single LED Headlights bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Don't forget the LED Fog Light fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2015 Cadillac ELR Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	LED Headlights	Buy LED Headlights →
High Beam	LED Headlights	Buy LED Headlights →
Fog Light	LED Fog Light	Buy LED Fog Light →
Brake Light	LED Bulb	Buy LED Bulb →
Side Marker	LED Bulb	Buy LED Bulb →
Turn Signal Front	LED Bulb	Buy LED Bulb →
Turn Signal Rear	LED Bulb	Buy LED Bulb →
Reverse Light	921K	Buy 921K →
Dome Light	LED Bulb	Buy LED Bulb →
License Plate	2825	Buy 2825 →
Map Light	LED Bulb	Buy LED Bulb →
Parking Light	LED Bulb	Buy LED Bulb →
Trunk Light	LED Light	Buy LED Light →

How do the 2015 Cadillac ELR's bulbs compare to other years?

The 2015 Cadillac ELR uses the same bulbs as the 2014 model.

The 2016 model continues with the same bulb sizes.

This bulb configuration covers the 2014–2016 model years. ← 2014 2016 →

Finding the best installation guide...

Other ELR Years

2016 2014

More from Cadillac

60 Special ATS Allante Brougham CT6 CTS CTS Coupe & Wagon CTS Sedan