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.
PCM/TCM Software Updates May Address Shifting Problems on Chrysler 300
Average mileage: 65,680 (1,000–195,600)
Drive Trains affected: 2WD, 4WD
51 people reported this problem
33 people shared problem details
The drive shift would not change to the next gear. Car would not go over 20 mph and check engine light along with ABS/BAP light would not go off. Dealership updated software last year and still the PCM went out this week. Dealership changed PCM for 490.00. I think this should be under factory warranty.
My 300C has a jerky transmission which is very troublesome. IT always occurs at a slow full stop and sometimes its noticeable in acceleration from a full stop. Everyone who rides in my car notices it. I have taken it in to two dealers 4 times and am always told there is nothing wrong with the transmission and had it in to an independent auto shop with the same conclusion. My car has very low mileage (8000). I love everything else about this car and it's my third 300. This problem did not exist for the first 6000 miles and it has since taken some of the joy out of the car.
2014 Chrysler 3008,000Visitor
Software updates did not repair the problem!!!
2005 Chrysler 300- 2WD62,000Visitor
the pcm tcm problem repaired by dealer cost 100 dollars ded. because covered under factory warranty up to 75000 miles
2014 Chrysler 3002,700Visitor
Hard shifts when engine is cold, had into dealership this weekend, they did software update, I still have the problem. Mileage is correct as listed - 2,700
2014 Chrysler 3009,298Visitor
My 300 AWD betan "surging" when arriving at full stop... upon stopping, the transmission would "surge" by taking a "push, or leap" then coming to a stop. Only doing so when cold at the beginning of the day or when sitting for a long time. Dealer "flashed" the computer and the problem was solved... however, before the "flash" and the "surging", this transmission was the smoothest shifting I have ever experienced... had to look at the tach to see when it shifted. Now the transmission does not "surge" when cold, but shifts like a truck. Warming up stops this phenomenon. I now have 10, 290 miles, and the "surge" is back, only it is now when warm, and occurs periodically. Maddening to say the least.
2006 Chrysler 300- 2WD177,728Visitor
the car feel like it running over some speed brakes then it shift hard.
2006 Chrysler 300- 2WD60,000Visitor
The car shakes/shutters around 40mph. After a while the car would not shift after 3rd gear. My lights started coming on and off on their own as well as the AC did not blow cold air either. I let the car sit for a while and had to call AAA to jump start the vehicle. The AAA driver advised needed new battery. Once he put the new battery in the car ran fine for a while and the problems all cam eback. Brought it to a machanic and they think its the computer.
Shudder or vibration around 40-50 mph. This car shifts into overdrive before 40 mph. I believe that it should shift into OD above 45. Will go after the PCM/TCM software update. 3.5L V6, auto. Trans shop diag it as torque converter clutch. est $890.00. Dealer stepped up and diag it as trans. Replaced it and reprogrammed PCM/TCM and did a relearn all for free. All is well. Chrysler sales managers can get stuff done.
2010 Chrysler 3001,000Visitor
When did the PCM/TCM software updates become available?
2013 Chrysler 3003,000Visitor
It's impossible to come to a smooth stop. When shifting into low there is an abrupt 'jolt' (as if someone has bumped into the rear of the car). Has been to the dealer four times with valve replacement and computer flashing. Problem is still not fixed! It may be 30% better but it still does it 70% of the time. It's a new auto, should be 100% as one would expect with a new auto!
2007 Chrysler 300- 4WD176,000Visitor
I have had the same problems listed here since I purchased the car. the dealership acted like they didn't know what it was. They flashed the computer and it continued to happen after a few days time. There was never a resolve for the "push/surge" forward. Now my car stutters, won't go over 20mph, and a whole plethora of other problems that the dealership can't figure out.
2008 LX 2.7L Chrysler 300 that will have hard shifts when driving over 40mph.
2008 Chrysler 300- 2WD102,000Visitor
shifts hard and has had repeat problems with being stuck in second gear.
2014 Chrysler 30038,000Visitor
Shudders when changing gears
2007 Chrysler 300- 2WD165,000Visitor
Transmission hangs when shifting from 3rd to 4th. RPM jumps to about 3500.
2007 Chrysler 300- 2WD116,000Visitor
Rough shift between 1st and 2nd gear. Faulty injector #2 reading
2007 Chrysler 300- 2WD78,000Visitor
car slow down when i reach 40 mph and does not change gears
2014 300 AWD here. Upon cold start, upshift from low to high gear very abrupt & delayed. Also, transmission jolts at times while cruising at constant speed, in the 40 to 50 mph range.
2006 Chrysler 300- 2WD122,000Visitor
lots of shuttering between gears, the tranny seam to shift up and down while going 40-50
We have been dealing with this for over 2 years now and several $1,000 already invested. Nobod...
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