Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Reasons Why Car Bulbs Burn Out

Model: (Various brands) Various
Part: Light bulb

Video tutorial

It may seem strange, but the most common reason for halogen bulbs in our vehicles burning out is overvoltage. A standard H7 bulb is designed to last 550 hours.

Given a 'normal' voltage of 12.5 volts, a 5% overvoltage halves its life. This can easily happen if non-original or additional components are fitted to our vehicle.

Conversely, if subjected to undervoltage of just 5%, its lifespan doubles. Another enemy of bulbs is shock, such as slamming the boot shut, as the filament can be affected.

Of course, this does not happen with xenon bulbs, as they do not have a filament.


Updated on 15 August 2026 by ScegliAuto


Related tutorials

Reasons Why Bulbs Often Burn Out on Modern Cars
Reasons Why Bulbs Often Burn Out on Modern Cars
(Various brands) Various In this video, discover why bulbs on modern cars tend to burn out frequently. The first reason is the electronics present in these vehicles; the pres…
Reasons to Deactivate the Front Passenger Airbag
Reasons to Deactivate the Front Passenger Airbag
(Various brands) Various There are reasons why it is mandatory to deactivate the front passenger airbag. Typically, this switch is located on the outer side of the dashboard,…
The reasons why the ESP warning light turns on.
The reasons why the ESP warning light turns on.
(Various brands) Various Let's take a look at an overview of why the ESP (or ESC/DSC/VSC depending on the manufacturer) light comes on in our vehicle: a steady light indicate…

How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

More videos