Failed communication between your car’s computer system and the headlight’s electrical system. The CTM is called a central timer because it also acts as a battery protection system in some vehicles if the lights are left on and ignition is off. Possible Fixes Replace the Bulbs. My car has 117000 miles. So, to check if that’s the reason, turn the wall switch off and back on to see if the lights stop flickering. The headlight switch in Dodge Durango is just used to signal the CTM which lights the driver wants to control. Tammy Bevis thinks this one should be a recall, however, as she says flickering headlights are a safety issue. The headlight flickering would happen when you are driving. Can you please point me in the right direction . In the old days the headlight switch actually switched power to the headlights. Physical damage to the headlamps may sometimes cause flickering. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. The bulbs should not be loosely attached. HEADLIGHTS KEEP FLASHING ON AND OFF. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations. The … If so, loose connectors or even fuses might be to blame. The current that flows through headlight wiring puts it under a great deal of stress. key-in-ignition when the driver’s door is open, headlamps-on when driver’s door is open, seat belt warning, check engine, air bag, antilock brakes (when installed), check gauges, low fuel, low washer fluid. Why lights flicker Lights can flicker for a number of reasons, some of which are harmless and others hazardous. Therefore, it’s worthwhile to remove the bulbs and inspect them for problems. Chrysler now uses a Central Timer Module (CTM) to do some of that work. My ballast was pretty rusted up. Failing is gradual, and when the process begins, the headlights may receive inconsistent electrical signals. Folks, I just did the halogen to BiXennon conversion and am coming across an issue: Both LED daytime running lights work fine when I turn on the car. You may need to find an alternate power source so that these gadgets don’t draw excessive amounts of power from essential components. Checked the dimmer switch and even by-passed it for testing. Inspect the Wire Fusing Panel. We noticed the flickering a few weeks ago too. If you are familiar with your car’s engine and internal parts, checking the system for the cause of flickering lights will not be a problem. Start car, turn on high beam headlights, good output voltage from alternator (new during buildup), 13.8 to 14 volts constant at idle. Some things are easy to check. Florescent bulbs have a propensity to flicker frequently, due to a variety of everyday factors, including cold … Flickering lights (lights that produce unsteady, rapid changes in brightness) are usually caused by one of 3 things: A bad bulb If they are, that’s definitely what’s causing the flickering. If the battery is at the end of its lifecycle, the headlights may not receive the right amount of power to function normally. If your car has accessories that draw in massive amounts of power, essential components, like headlights, may not get enough. In most cases, their diagrams are right from the factory manuals. After warm up (4 to 5 minutes) the high beams flicker on & off along with the high beam indicator in dash. However, such devices won’t fix all issues that lead to flickering, such as bad wiring or failing alternators. , such devices won ’ t many products to this regard s electrical system headlights may get! 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