Q: What's CAN-bus Error Free LED bulbs?

A: CAN-bus, also written as canbus, is a type of circuit board chip used to communicate with the vehicle's on board computer. This class of LED bulbs have either built-in CAN-bus use load resistors or higher wattage so they can pass most European vehicles' on board computer check (without triggering error or bulb out warning on the dashboard)

Q: Are CAN-bus Error Free LED bulbs guaranteed to work for any European cars?

A: No, The CAN-bus Error Free LED bulbs are not guaranteed to work for all European vehicles. You can think this like Tylenol. It works for most people to cure their headache, but might not work for everybody. Even for the this same person, it might not work every time. Please always contact us or check the known compatible vehicle list to ensure the fitment before buying.

The known compatible vehicle list is created based on our long testing to ensure their correct fitment and no-error functioning.

Q: How to install the CAN-bus Error Free LED bulbs

A: Please install the CAN-bus Error Free LED bulbs follow these steps:
1) Always make sure the car is off, key is out and all the lights are off before the installation (otherwise, the on board computer will record the error when you remove the stock bulb)
2) Install the LED bulbs
3) After that, keep the engine off and turn on the light to see whether the LED bulb lights up
4) If the LED bulbs lights up, put the LED light back to the housings and start the engine to see check see whether there's any error message on dashboard
A) If there is no any error message, well done
B) If there is an error message, please turn off the engine, lock the car and wait about 10 sec to start the car and check again
C) You might need to turn your car off and on for a 3rd time because sometimes it takes two times to have the on board computer reset itself
5) If the LED bulbs don't light up, turn off the light and car, turn the LED bulb 180 degrees and repeat from step 3

You can also take a look at this YouTube video showing you how to properly install the CAN-bus Error Free LED bulbs.

Q: How come the LED bulb flickers/strobes a couple times when I just start the engine?

A: This symptom is completely normal when installing any LED bulb for an European cars such as Audi, BMW, Mercedes-Benz, Porsche, Volkswagen, etc. This temporary flickering is caused by European cars' on board computer sending a routine check electrical impulse when you first start the engine to all the bulbs and lamps to make sure they are not burnt out. Since LED bulbs are super sensitive to power, it will cause the LED bulb to respond and light up.