2025 Toyota Camry Bulb Size Guide

Quick reference

The 2025 Toyota Camry ushers in a new era of styling and technology, and with that comes a largely LED-integrated lighting system for its primary exterior illumination. This guide will help you navigate the bulb sizes for the few remaining serviceable incandescent bulbs, as well as provide crucial information regarding potential upgrades and common lighting issues.

For the 2025 model year, Toyota has opted for integrated LED units for most major lighting functions, including the low beam, high beam, fog lights, daytime running lights (DRLs), brake lights, and tail lights. This means that if an issue arises with these components, the entire LED assembly typically needs to be replaced, rather than just a single bulb. This design choice contributes to the modern aesthetic and enhanced longevity, but it's an important consideration for repair and maintenance.

LED vs halogen upgrade considerations

While many critical exterior lights are already LED from the factory, you might be considering upgrading the remaining incandescent bulbs (front and rear turn signals, reverse lights, license plate lights, side markers, dome, and map lights) to LED for a more consistent look, improved brightness, and increased efficiency.

When upgrading incandescent bulbs to LED, especially for turn signals, you need to be aware of potential CANBUS errors. Modern vehicles use a CANBUS (Controller Area Network Bus) system to monitor various electrical components, including lighting. LED bulbs draw significantly less power than traditional incandescent bulbs. This lower power draw can be misinterpreted by the CANBUS system as a "bulb out" error, leading to hyper-flashing (rapid blinking of the turn signals) or dashboard warning lights. To prevent this, you'll need to install CANBUS-compatible LED bulbs or use load resistors in line with your new LED bulbs. Load resistors mimic the electrical load of an incandescent bulb, tricking the CANBUS system into recognizing the LED as a standard bulb.

For interior lights like the dome and map lights, CANBUS errors are less common, but it's still advisable to choose quality LED replacements to ensure proper fitment and performance. Always ensure you purchase the correct bulb size for your application.

How to replace each bulb

Front Turn Signal (7440): Access typically requires opening the hood and reaching behind the headlight assembly. Twist the bulb socket counter-clockwise to remove, pull out the old bulb, and insert the new one. Ensure the new bulb is securely seated before reinserting the socket.

Rear Turn Signal (7440): Access is usually from inside the trunk, behind the tail light assembly. You'll likely need to remove a small access panel or trim piece. Twist the bulb socket to remove, swap the bulb, and reinsert.

Reverse Light (921): Similar to the rear turn signals, access is generally from the trunk area behind the tail light housing. Twist the socket, replace the bulb, and re-secure.

License Plate Light (168): These are usually accessed from the exterior by carefully prying out the lens cover (often with a small trim removal tool) or by removing a few screws. Once the lens is off, twist the bulb holder, replace the bulb, and reassemble.

Side Marker (194): These small bulbs are typically found on the side of the headlight or tail light assembly. Access can be from behind the bumper or wheel well liner. Twist the socket, replace the bulb, and reinsert.

Dome Light (3175) and Map Lights (168): For interior lights, you'll need a plastic trim removal tool to carefully pry off the clear lens cover. The bulbs are usually visible and can be gently pulled out. Ensure the new bulb makes good contact in the socket.

Common lighting issues for this generation

Given the integrated LED design of the 2025 Camry's primary exterior lighting, common issues related to burnt-out individual bulbs in these areas are significantly reduced. However, if an entire LED assembly (e.g., a headlight or tail light) goes out or experiences flickering, it generally indicates a failure within the LED unit itself or its associated driver module. In such cases, professional diagnosis and replacement of the entire assembly are usually required.

For the incandescent bulbs that remain, typical issues include burnt filaments, leading to a complete lack of illumination. For turn signals, a rapidly flashing turn signal (hyper-flashing) is often an indication that one of the bulbs on that side has burnt out, or if you've upgraded to LEDs without load resistors. Additionally, corrosion in bulb sockets can lead to intermittent operation or complete failure, requiring cleaning or replacement of the socket.

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