Cadillac XTS 2016 Bulb Size
Bulb size chart
The 2016 Cadillac XTS uses a mix of LED and conventional bulb types, and the exact fit can change by lighting position. This page helps you verify bulb sizes by location so you can match the correct replacement for the front, rear, interior, and cargo-area lights on your XTS.
If you are replacing a failed bulb or upgrading a light, checking the bulb by its position is the safest approach. The 2016 Cadillac XTS can use different bulbs for headlights, turn signals, parking lights, license plate lights, and cabin lighting, so a position-based guide saves time and reduces the chance of ordering the wrong part.
Fitment can vary with trim level, lighting package, market, and body style, so always compare the bulb in your vehicle before buying. Some positions on the 2016 Cadillac XTS use LED assemblies, while others use replaceable bulbs such as D3S, 921, 7444NA, 2825/98, 7065, 2886X, or 194/7441 depending on location. If you are considering an aftermarket LED conversion, make sure the bulb base, polarity, and beam pattern are compatible, especially for exterior lights where glare or warning messages can be an issue. For the most reliable result, inspect the installed bulb and confirm the socket style before purchase.
FAQ
What headlight bulb does the 2016 Cadillac XTS use?
The headlight bulb listed for the 2016 Cadillac XTS is D3S for both high beam and low beam applications on this page.
Which bulb size fits the rear backup reverse light on a 2016 XTS?
The rear backup reverse light uses a 921 bulb.
What are the front turn signal and parking light bulb sizes on this model?
Both the front turn signal light and the parking light use 7444NA bulbs on the 2016 Cadillac XTS.
Does the 2016 Cadillac XTS use LED bulbs for the brake lights and tail lights?
Yes. The brake light bulb, tail light bulb, center high mount stop light bulb, daytime running light bulb, rear turn signal bulb, and rear side marker bulb are listed as LED on this page.
What bulb fits the license plate lights?
The license plate light bulb can be 2825 or 98, depending on the installed lamp setup.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light can use 194 or 7441 bulbs.
What is the vanity mirror light bulb size for the 2016 Cadillac XTS?
The vanity mirror light bulb is listed as 7065.
What bulb fits the dome light?
The dome light bulb is listed as 2886X.
Are the interior door lights the same as the license plate lights?
They can use the same bulb types on this page. The interior door light bulb is listed as 2825 or 98, which also appears for the license plate light.
What bulb is used for the front side marker light?
The front side marker light bulb is listed as 194NA, and it is noted as optional because fitment can vary by market or lighting package.
Why should I check the bulb already installed in my Cadillac XTS before ordering?
Because trim level, package, and market differences can change the exact bulb used in some positions. Checking the installed bulb helps confirm the correct base and size before you buy.
Can I replace an LED exterior light with a standard bulb on the 2016 XTS?
Usually no, not without changing the lamp design or assembly. Many exterior positions on this model are LED-based, so replacement often means servicing the LED unit rather than swapping in a standard bulb.
How can I avoid ordering the wrong bulb for my 2016 Cadillac XTS?
Use the lighting position on the page, match the bulb base, and compare the old bulb or socket before purchase. This is especially important for the D3S headlight, 7444NA front lamps, and the 921 reverse light.