Engine Controls - Engine Crank/No Start/Stalls

Engine Cranks but Won't Start or Starts Then Stalls

Got an 05-06 RL owner complaining the engine cranks but it won't start or it starts and then stalls? The reason might just be the PCM auto-start feature. When your turn and hold the ignition switch to START (III) for at least 1 second, this feature keeps the starter motor running for up to 15 seconds or until the engine starts.

Normally, the ignition switch returns to ON (II) when you let go of the switch. But due to a rather hefty spring inside, the switch can jump back to ACC (I) if you let go of it too quickly. In ACC (I), the engine, climate control, and gauges are of{ but the audio system and navigation system stay on. Vehicle owners think they've got an engine starting problem and report it on the service drive as either a crank but no start problem or an engine start then stall problem.

There's nothing wrong with the ignition switch. Just tell your service clients they just need to avoid letting go of the switch too soon.