Error Free LED FAQ
An error free LED bulb is an LED lamp that is CAN bus-ready. This means that the bulb is equipped with either resistors(3W-5W) to simulate a larger power draw, or have built-in decoders(LED headlights) to increase starting amperage both of which the vehicles computer system(CAN bus, BCM, etc.) should detect. This will ensure that the computer system does not recognize the lamp is a fault or an open circuit due to the low power draw, and will prevent minor malfunctions such as a lamp out indicator and even other common malfunctions that a CAN bus or similar system may cause. Back to Top
CAN Bus LED bulbs are simple plug-and- play LED bulbs which are made specifically for CAN Bus-equipped vehicles. These bulbs work with your vehicle’s advanced computer system, so when your vehicle’s computer reads them, they respond back correctly. Back to Top
CAN Bus means Controller Area Network Bus. This system monitors your vehicle and reports operating conditions. CAN Bus systems are commonly found in European vehicles such as BMW, Audi, Mercedes, Volkswagen, Porsche, and in many 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. Back to Top
Each vehicle has different requirements that the CAN Bus system is looking for, but in most cases CAN Bus LED bulbs should prevent a “bulb out” indication in areas such as tail, brake, and running lights. If you use a standard LED bulb that is not a CAN Bus application, you would consistently get a “bulb out” dashboard indicator because your system can’t communicate with a standard LED bulb. Back to Top
CAN Bus bulbs will not prevent hyper-flashing of turn signals. These bulbs are communicating with the CAN Bus system, but the relay still needs an appropriate amount of load to operate correctly. Your electrical system could require load resistors or an electronic flashing relay to stop hyper-flashing. The factory relay causes the hyper-flash when it thinks there is not a bulb working. Back to Top
Yes, the can-bus led bulb can be used as non-Can Bus application. Back to Top
1. Take out the LED bulb and replace it with the stock 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 (trunk and hood if open as well), 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 us and we’ll find an alternative solution to the problem. Back to Top