Chrysler 300M Problems

RepairPal has identified the most common problems with the Chrysler 300M as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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23
Known Problems

Before refilling the coolant, make sure the air bleed valve is open. Follow the proper fill procedure—it will prevent problems with overheating, low heat output from the heater, and possible coolant bottle failure.

A dirty throttle body may cause low engine idle speed or frequent stalling, as oily residue blocks air flow in the throttle when the throttle is closed. Throttle body cleaning may be necessary to correct this condition. Our technicians caution against spraying cleaner directly onto the throttle body as this may damage the throttle position sensor (TPS).

Worn sway bar bushings or sway bar end links may cause a rattling or clunking noise from the front suspension during low-speed driving. Though not always the root cause, front struts are often replaced for this condition.

There was a recall on the brake master cylinder in order to fix a problem that causes the brakes to drag when the brake pedal is not pressed. If the brakes drag, they will fade, causing overheating and increased stopping distance. The master cylinder is replaced under the recall.

A damaged cam position sensor (or its wires and connector) can cause intermittent stalling, stumbles, or hard starting.

If the ignition key does not turn and/or cannot be removed, a new lock cylinder may be needed. A worn key can also cause similar problems.

The window glass lift plates tend to bend or break and cause the window glass to tilt and bind in the door. The lift plates can be replaced separately from the window regulator. In more severe cases, however, a new window regulator may also require replacement.

Fatigued or broken wires to the output speed sensor can cause problems with the cruise control, erratic shifting, and speedometer operation. This may also cause Check Engine Light illumination.

Poor output from the heater and/or engine overheating can be caused by air left in the cooling system after the cooling system has been serviced. Our technicians tell us the proper coolant fill procedure should be used to prevent this problem from occurring.

When a no start condition is caused by a faulty camshaft or crankshaft sensor, related fault codes stored in the powertrain control module (PCM) should not be trusted. Our technicians tell us that under certain conditions a fault code can be stored for the "good" sensor. Care should be taken to properly diagnose this condition.

Failure to use the correct automatic transmission fluid and follow the maintenance schedule can result in shifting problems.

Some vehicles may develop a musty odor coming from the HVAC system, Dodge has issued a cleaner/disinfectant and a coating for the evaporator designed to inhibit bacterial growth.

On vehicles equipped with side airbags, placing articles under the seat can damage wiring. Loose, damaged, or dirty connectors under the seat are frequent causes for intermittent airbag lamp illumination.

Software updates are available to address transmission issues. However, due to the age of these vehicles, mechanical failures are more likely to be causing transmission problems. If a mechanical failure is repaired or the transmission is replaced, it is important to make sure any software updates have been taken care of. Failure to do so could result in continuing transmission issues.