Hey guys, i just changed my oem halogen lights on my 200lx with 9012 led Philips HL and it works good because it has canbus built it but when i drive it shows lower bean headlights out on my screen so is there a way to get rid of it or should i just go back to oem lights? Any feedback would be helpful
King
If you decide to add the resistors be mindful the resistors do get hot and should be mounted on a metal surface and kept away from plastics and coming into contact with any wires.
Note the CAN-bus does not come into play with the headlamps but seems to be a convenient tag for the issue. There are 2 issues in play with LED headlamps. The issue you note is with the lower current draw of the lamp causing the control module to believe the bulb is burned out. This is overcome by adding a resistor to the circuit to increase the current draw. The other issue is the LED lamp flickering due to the pulse width modulation (PWM) used to regulate the voltage to the lamp done to extend the life of the lamp. Normally the running voltage of a vehicle is around 14.4 volts. To extend the life of the lamp, the control module briefly shuts off the current to the lamp to reduce the voltage at the lamp to under 14 volts. This on-off shows up as a flicker with LED lamps. This does not cause an issue with a halogen bulb as the filament does not switch off but continues to glow where an LED is either on or off. This is overcome by adding a capacitor into the headlamp circuit to provide current when there there is briefly no current (appears to be case for the LED lamps you purchased that note the 'canbus' is built in).
Ok, I know - TMI
Note the CAN-bus does not come into play with the headlamps but seems to be a convenient tag for the issue. There are 2 issues in play with LED headlamps. The issue you note is with the lower current draw of the lamp causing the control module to believe the bulb is burned out. This is overcome by adding a resistor to the circuit to increase the current draw. The other issue is the LED lamp flickering due to the pulse width modulation (PWM) used to regulate the voltage to the lamp done to extend the life of the lamp. Normally the running voltage of a vehicle is around 14.4 volts. To extend the life of the lamp, the control module briefly shuts off the current to the lamp to reduce the voltage at the lamp to under 14 volts. This on-off shows up as a flicker with LED lamps. This does not cause an issue with a halogen bulb as the filament does not switch off but continues to glow where an LED is either on or off. This is overcome by adding a capacitor into the headlamp circuit to provide current when there there is briefly no current (appears to be case for the LED lamps you purchased that note the 'canbus' is built in).
Ok, I know - TMI
This link notes the GM bulb # 23342527 provides a better beam pattern than many others HIR2 bulbs. The bulbs themselves are branded Vosla. I have been running them for a number of years now.
www.allpar.com
Upgrading modern car headlights: Chrysler 200 and 300...
Upgrading modern car headlights: Chrysler 200 and 300, Dodge Dart, Ram, and Fiat by David Zatz With winter on the way, you may well be wishing you had held out for a car or truck with HIDs - but what do you do if you have a limited budget and aren't happy with the headlights? There are many...
www.allpar.com
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