Carbon buildup on the valves may illuminate the Check Engine Light, indicating "Multiple Cylinder Misfires." The combustion chamber must be cleaned of carbon. There are updated valve spring retainers that will help prevent a recurrence.
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Repairpal verified 2006 Chrysler 300 problems
There may be an intermittent three- to five-second delay between when you turn the key and when the engine actually cranks. If the Check Engine Light illuminates, the brake switch should be inspected and the PCM may need updated software.
If you experience rough shift and/or shuddering during gear shifting, software updates to the powertrain control and transmission control modules (PCM and TCM) are available which may address these problems. On higher mileage vehicles, a mechanical failure may exhibit similar symptoms. Proper diagnoses should be performed before any repairs or software upgrades are attempted.
A transmission fluid leak can develop at the electrical connector on the automatic transmission. Replacement of the electrical connector may be necessary to correct the leak.
Software updates are available which may correct various electrical problems with the interior features and lighting.
Rear differential and axle seals are prone to repeated leaks.
Water may leak into the transmission from the dipstick tube, causing fluid contamination and a shudder during light acceleration. New seals for the dipstick tube are available; the transmission fluid should be flushed as well. If the problem lingers, a new torque converter may be needed.
A whine type noise may develop form the engine area when the car is idling (typically in warmer temperatures, after the engine has warmed up). It's possible that the noise may be from the engine oil system and is harmless. Still, have a technician verify that the noise is nothing to worry about.
A squeak may be heard from the base of the steering column while turning the steering wheel. The noise may be coming from the lower seal on the steering shaft. Lubrication of the seal will commonly correct this problem.