CAN Bus means Controller Area Network Bus. This system monitors your vehicle and reports operating conditions. CAN Bus systems are commonly found in many European vehicles and some American vehicles. While most late model American vehicles have CAN Bus systems, it is always good to check with your vehicle dealer to see which system your vehicle has before purchasing electrical products.
What are CAN Bus Error Free LED bulbs?
CAN Bus Error Free LED bulbs are LED bulbs that have resistors that are internally/externally attached. European and some American vehicles, such as Audi, Mercedes-Benz, BMW, Porsche, Range Rover, Jaguar, Dodge, Chrysler, Mitsubishi, Jeep, Volkswagen, Volvo, are the typical candidates for these types of LED bulbs as the electrical system on these cars have sensors that detect whether the light is working or not. Any questions, welcome to communicate with BROSintl. Since LED bulbs draw far less power than the original halogen or HID bulbs, the vehicle’s computer may think that the bulb is out so it'll throw an "error message" or "bulb out" warning the driver that the light is out; thus the name "error free". The resistor’s job is to mimic the power draw of the original halogen or HID bulbs to trick the computer to think that the bulbs are drawing the same rate of power so the vehicle does not throw any error messages.
Error free LED bulbs are most commonly used for exterior lights such as the turn signals, head lights, parking lights, license plate lights and more. Interior lights typically do not need error free bulbs, but for certain vehicles, it is required.
Can I use CAN Bus LED bulbs in non-CAN Bus applications?
CAN Bus LED bulbs SHOULD NOT be used in non-CAN Bus applications because in most cases they can cause other vehicle circuits to have problems. A CAN Bus LED bulb presents more resistance than the original bulb due to built-in resistors and may cause feedback into other circuits in the non-CAN Bus electrical system.
How do I know if my car is equipped with CAN Bus?
If the vehicle warns you when a bulb is out, it is equipped with CAN Bus. The easiest way is to contact the vehicle’s supplier or dealership,or contact BROSintl expert. If you’re still not sure, we normally tell customers to remove a light and drive the vehicle to see if it gives a warning. For example, remove a rear parking light – one that is not a brake light or turn signal also and drive the vehicle around during the day with the parking lights on. If the vehicle gives the bulb out warning, it is CAN Bus. If no warning, no CAN Bus.
I have Error Free LED bulbs, but they still throw an error, why?
With vehicles that require error free LED bulbs, there is a specific way to install the lights to make sure that there is no error message. Please follow the steps below:
1. Take out the LED bulb and replace it with the original bulb, turn on the vehicle, and confirm if the error message is cleared.
2. Turn off the vehicle and re-install the LED bulbs (make sure it is the correct side of polarity or else the vehicle will record the error message again). If the LED bulb is installed, but the polarity is incorrect, you will have to start the troubleshoot again from step one (1).
3. Close all the doors, lock the vehicle, and wait 10-15 seconds. After this period, start up the car and turn on the lights to check for the error message.
This is a strange procedure to do, but what we have found in the past is that it does work out well for majority of the vehicles we’ve dealt with. If the troubleshoot above still does not work, please contact BROSintl and we’ll find an alternative solution to the problem.
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