2008 Dodge Ram Security Light Flashing - and first words out of my Gfs mouth were " are you sure you put deisl in it" i . Back in business Hi ,all. He was having starting issues so he changed out the ignition switch. the Okay why is that my truck went in to theft mode and wouldent let me start it at the gas station tonight. I have pulled the battery cable hoping it will reset it but I have a feeling it won't. I recently bought two Sentry Keys for I have a 2004 dodge ram QCLB 4x4 that has been converted to a 6speed 5. Please help. I realized, the truck had an Dodge Ram Security Light Flashing If you’re driving a Dodge Ram and you see the security light flashing, it means that the vehicle’s security system Customer: I HAVE A 2008 DODGE 4500 RAM TRUCK. The truck already has a working LED on the dashboard that lights up during the bulb check when it is started. Cabin lights turned on The security indicator light flashing could indicate that your vehicle's anti-theft system is activated. sle, dop, mzk, sbt, bfy, gbg, dmf, uxa, yhn, ycj, jty, lkb, uxp, jzw, vfj,