Audi S4 2020 Bulb Size
Bulb size chart
This page helps you verify the bulb sizes for the 2020 Audi S4 by lighting position, so you can match the correct replacement before you buy. Because Audi used LED lighting for most exterior and many interior locations on this model, it is especially important to confirm the exact lamp position rather than assuming one bulb size fits every light.
Use the bulb chart for the 2020 Audi S4 to check items such as the low beam, high beam, turn signals, brake lights, license plate lights, reverse lights, and cabin lights. The S4 can vary by trim, market, and lighting package, so a position-by-position lookup is the safest way to identify the correct bulb or assembly.
For fitment, always compare your car’s installed bulb or lamp module with the chart before ordering, especially if your S4 has a different trim, body style, or factory lighting package. Many exterior functions on the 2020 S4 are LED-based, which means the replacement may be an LED module, not a simple halogen bulb. If you are considering aftermarket LED conversions, check beam pattern, polarity, error messages, and whether the housing is designed for LED use. The best results come from verifying the installed part first, then matching the replacement to the exact location on the vehicle.
FAQ
What bulb does the 2020 Audi S4 use for the low beam headlight?
The 2020 Audi S4 uses an LED low beam headlight setup. Because it is an LED application, the replacement is typically a matching LED light source or module rather than a standard halogen bulb.
What bulb does the 2020 Audi S4 use for the high beam headlight?
The high beam on the 2020 Audi S4 is listed as LED. Check the exact headlamp configuration on your car before ordering, since the replacement may be part of the LED headlight assembly.
Are the daytime running lights on the 2020 Audi S4 LED?
Yes, the daytime running light bulb position is listed as LED on the 2020 Audi S4. On many Audi models, the DRL is integrated into the lighting assembly.
What should I use for the front turn signal bulb on a 2020 Audi S4?
The front turn signal light bulb position is listed as LED. If your car has a factory LED lighting package, you should verify whether the signal is a replaceable LED element or part of a larger module.
What is the rear turn signal bulb type for the 2020 Audi S4?
The rear turn signal light bulb position is listed as LED. Since rear lighting can vary by market and body style, confirm the installed lamp before purchasing a replacement.
Does the 2020 Audi S4 use LED brake lights?
Yes, the brake light bulb position is listed as LED. In many cases, the brake light is integrated into the tail lamp assembly rather than using a traditional replaceable bulb.
What bulb is used for the license plate lights on the 2020 Audi S4?
The license plate light bulb position is listed as LED. If you are replacing a failed light, make sure the new part matches the factory LED style and connector.
What is the reverse light bulb type on the 2020 Audi S4?
The back up reverse light bulb position is listed as LED. Because reverse lights are often built into the rear lamp assembly, check the exact rear light design before buying parts.
What bulb does the 2020 Audi S4 use for the glove box light?
The glove box light bulb is listed as 2821 for the 2020 Audi S4. This is one of the few interior positions on the page with a specific bulb designation rather than LED.
Are the interior map lights and dome light on the 2020 Audi S4 LED?
Yes, the map light bulb and dome light bulb positions are listed as LED. The same applies to several other interior locations, including the trunk or cargo area light and stepwell light.
Can bulb fitment differ between 2020 Audi S4 trims or markets?
Yes. Trim level, lighting package, body style, and market can change the exact bulb or module used on the 2020 Audi S4. Always verify the installed part on your vehicle before ordering.
Should I replace an LED bulb on the 2020 Audi S4 with an aftermarket halogen bulb?
No. If the car is equipped with LED lighting at that position, use the correct LED replacement or compatible module. A halogen bulb will not be a proper substitute for an LED-specific application.