2019 Nissan Altima Bulb Size Guide

Quick reference

The 2019 Nissan Altima offered a mix of lighting technologies depending on the trim level. Lower trims typically came equipped with halogen reflector headlights, while higher trims featured LED headlights for both low and high beams. Fog lights were consistently halogen across all trims that included them.

LED vs Halogen Upgrade Considerations

Upgrading your 2019 Nissan Altima's halogen bulbs to LED can significantly improve visibility and give your car a more modern look. However, there are several factors to consider before making the switch:

• CANBUS Errors: Modern vehicles like the 2019 Altima utilize a CANBUS (Controller Area Network Bus) system to monitor various electrical components, including lighting. LED bulbs draw significantly less power than their halogen counterparts, which can sometimes trick the CANBUS system into thinking a bulb is out. This can result in "bulb-out" warning messages on your dashboard or flickering LED lights. To circumvent this, you'll often need to install CANBUS-compatible LED bulbs or separate load resistors.
• Adapters and Fitment: While many LED bulbs are designed to be direct replacements, some may require additional adapters or modifications to fit properly into your Altima's headlight or taillight housings. Always double-check the product specifications and reviews for your specific year and model.
• Beam Pattern: Not all LED bulbs are created equal. When replacing halogen headlights with LEDs, it's crucial to choose bulbs that replicate the original halogen's beam pattern as closely as possible. Poorly designed LED bulbs can scatter light, creating glare for oncoming drivers and reducing your effective down-road visibility, even if the light output is brighter.
• Cooling: LED bulbs generate heat, and effective heat dissipation is crucial for their longevity. Many high-quality LED bulbs feature built-in cooling fans or elaborate heat sinks to manage this. Ensure that any LED bulbs you choose have adequate cooling systems and that there's enough space within the housing for proper ventilation.

How to Replace Each Bulb

Replacing bulbs on your 2019 Altima generally requires basic hand tools and a bit of patience. Always refer to your owner's manual for specific instructions and safety precautions.

• Low/High Beam Headlights: Accessing these typically involves opening the hood and reaching behind the headlight assembly. For halogen bulbs, you'll twist to unlock, unplug the connector, and remove the old bulb. LED headlight replacement can be similar, but some kits might involve an external driver or more complex wiring. For trims with OEM LED headlights, individual bulb replacement is generally not possible; the entire headlight assembly needs replacement if an LED fails.
• Fog Lights: These are usually accessible from underneath the front bumper or by removing the fender liner. Twist to unlock and unplug the connector.
• Daytime Running Light (DRL): Often integrated into the headlight assembly, these can be accessed similarly to the high/low beams. Twist the bulb holder to remove.
• Front Turn Signal: Typically found within the headlight assembly, accessed from the engine bay. Twist the bulb holder to remove.
• Rear Turn Signal, Brake Light, Tail Light, Reverse Light: These are usually accessed by opening the trunk and removing a small access panel or by carefully prying off the taillight assembly itself. Once you have access, twist the bulb holder to remove the old bulb.
• License Plate: Often held in place by small screws or clips. Remove the lens cover to access the bulb.
• Side Marker: Typically integrated into the headlight assembly or a small separate housing on the side of the fender. May require prying out the assembly or twisting a bulb holder.
• Dome/Map Lights: Carefully pry off the lens cover with a plastic trim tool to avoid scratching the interior. The bulbs are usually push-in or festoon type.

Common Lighting Issues for this Generation

Owners of the 2019 Nissan Altima may occasionally encounter a few lighting-related issues:

• Premature Halogen Bulb Burnout: While not exclusive to the Altima, some owners report halogen headlight bulbs burning out sooner than expected. This can sometimes be attributed to vibrations, voltage fluctuations, or oils from handling. Always wear gloves when replacing halogen bulbs.
• Condensation in Headlight Assemblies: Occasionally, condensation can build up inside the headlight or taillight assemblies. Minor condensation is often normal and will dissipate, but excessive moisture could indicate a faulty seal, potentially leading to premature bulb failure or damage to LED components.
• DRL Malfunctions: Due to the DRLs being incandescent on many trims, they are prone to eventually burning out. Replacing them is generally straightforward. If you experience DRL issues beyond a simple bulb replacement, further diagnostic might be needed.

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