I have owned my Chrysler 300 for about 9 yrs. There are good and poor features with this vehicle just as there are with any other vehicle I suppose. It is an excellent riding car for long trips. It has very poor lighting provided by headlights. Poor side lighting when coming to turns at night.
Here are maintenance records I kept since owning car.
The most serious problem was an oil leak around oil filter adapter cooler. Major job to get at with that 3.6L V6. Dealer fixed it under Warrantee
2014 Chrysler300 known for this problem.

Purchased 10/31/2014
13851 8/7/2014 Oil change, dealer 14109 11/3/2014 Change battery in FOB 1 (CR2032 3V)
19300 3/13/2015 Oil & Filter change 22020 4/17/2015 Changed out alternator per P60 Recall
28300 7/27/2015 Oil & Filter change
30180 12/16/2015 Oil Filter change. Oil was observed on engine around base of oil filter assembly.
took car in and had Chrysler (Johnson & Sons) garage investigate.
30386 12/21/2015 Oil filter adapter cooler was found leaking. Oil filter adapter cooler
leaking at crimp for oil sending unit. Replaced oil filter adapter/cooler assembly
and related gaskets. Refilled oil. Seems to be working properly.
** NOTE: Be sure to use new 2014 oil filter p/n 68191349AB
68000 8/19/2016 Pulled front tires to check brake pads. Look good-Check again when
buying new tires.
41787 10/5/2016 Oil & Filter change
12/29/2016 Took car in (Johnson & Sons) for recall software updates to shifter operation.
47000 3/2/2017 Oil & Filter change 51700 6/21/2017 Oil & Filter change
Had damage to front end repaired from hitting Florida pig. (Skyline Auto.)
56000 12/27/2017 Oil & Filter change
3/13/2018 Replaced power window switch - front drivers side ($110.00)
62348 4/30/2018 Windshield chip repaired (Safelite AutoGlass)
62360 5/5/2018 Oil & Filter change
8/7/2018 Recall on cruise control - Johnson & son
64800 8/13/2018 Oil & Filter Change
67557 12/4/2018 New Tires - Nexen Aria AH7 215/65R17
70200 1/15/2019 Oil & Filter change
74082 4/24/2019 Tire Balance and rotation - Free by Walmart
74350 5/3/2019 Replaced Bezel in front end that fell out after Pig damage repair of 6/21/2017
74400 5/9/2019 Passanger air bag replace per recall
75200 6/12/2019 Oil & Filter change
83700 3/16/2020 Oil & Filter change and tire rotation (Walmart) 86000
9/5/2020 Installed new interstate battery
86,500 10/6/2020 Oil & Filter change and tire rotation (Walmart) 86,600
11/3/2020 Replaced rear brake pads. Check again at 150,000
87,000 2/26/2021 Picked up nail in drivers side front . Mathews/Pomps wouldn't fix. Took to
Private mechanic,. He fixed. Moved tire to passenger side rear. $15
88600 3/1/2021 Oil & Filter change
89366 5/3/2021 Took in for recall. Replaced canister for gas fumes from gas tank.
Image on camera reversed. Lost guide lines in image. Reloaded software for camera.
No help. Waste of $30.
89500 5/7/2021 Replaced Back-up Camera myself. Purchased one on line. $106.00 - Fixed the problem
91500 8/12/2021 Inspected front brake pads. About 2/3 worn out.
Loosened up a tight caliper pin top drivers side. Check again around 111000 mi.
92300 10/11/2021 Engine Code P0128 (Engine not coming up to operating temp.in 3 minutes)
Changed out thermostat. Will see if that helps??
93350 10/15/2021 Code cleared
93550 12/4/2021 Oil & Filter change (I changed)
95000 6/25/2022 Had to replace tire private mechanic repaired. Boot didn't hold.Got two 215/60R17 free
from ny brother and mounted them on front.Threw away bad tire. Kept good one off
front for future if I ever need. It's on the shed.
95137 7/13/2022 Welded up crack in exhaust system just forward of muffler. $31.00
95389 7/27/2022 Oil & Filter change Walmart $25)
95400 7/27/2022 Changed Tie Rod ends. Driver side loose as per My mechanic Changed them both. Have a rattle in car when going over bumps.
Moved tires from my brother to the rear. Too much road noise when mounted in front.
9/2/2022 Installed new Monroe Struts based on Bee Line Allignment recommendation
to eliminate front end rattle when going over bumps. Solved my rattle problems
103100 10/30/2023 Oil & Filter change Walmart $25) Also replaced tire monitor sensor Passenger side front

I am now getting a message to check transmission. Got a check engine light
Anybody got any ideas what that's all about??
Hope this info is helpful

Den From Wisconsin

 

Get the diagnostic trouble codes read. Many auto parts stores will read or loan an OBD scanner. The transmission code is the most important one as it probably triggered the check engine lamp but all the codes are needed. Note dtc's do not point to a part but is a starting point for a proper diagnosis.

At 103,000 miles you are due for new spark plugs (100,000 mile recommended).

 

Thanks for input.
i have my own diagnostic reader albeit a cheap one (Autel 319) It shows no codes although it knows there is a message being displayed. Reading some other threads, this message does not necessarily throw a code, I cleared the message but of course it reappeared within next couple driving cycles. Wondering if others have seen this message and how they corrected it. Heading for the dealer eventually to see if there are any recalls on this.

 

If the check engine lamp is lit, there is a diagnostic code. If the service trans message is being displayed, there is a diagnostic code. I believe your reader may not be able to read/decode some of the newer manufacturer specific codes that are triggering the lamp and message (firmware update may remedy).

Suggest a visit to an auto parts store. It may also be beneficial to have the stored (previously active), pending (not yet meeting active criteria) and active codes.

 

Your right.
My diagnostic reader has two areas. Engine codes and A/T (automatic transmission??) codes.
There is a code under A/T PO850 (Park/Neutral switch input circuit). There is a good video on this.
Hopefully just a poor connection in wiring harness?? We will see.

 

I continue to have issues with the shifter on this 2014 chrysler 300. It doesn't want to shift smoothly into PARK when I come to a stop and want to get out of car. If I leave in NEUTRAL it will go into PARK when I take my foot off brake or open car door. Sometimes i'll try repeatedly to put into PARK while foot on brake and it might eventually work. It would appear that computer sometimes does not know I have foot on brake. Has anyone else had similar problem and how was it resolved? Thanks

 

Issue resolved. I want to pass along how my problem (shifter won't go into park) was resolved in case anyone else has this problem. This generated a PO850 code and check engine light. This was a real freak situation, It just so happens that a small stone had kicked up and got wedged between the emergency Park Release arm located on transmission and the transmission case. I have the 8 speed transmission. This caused the arm located on the transmission to reposition itself. The Park/Neutral switch that tells the computer all is well is apparantly located on this arm internally in the transmission. The computer TCM (Transmission Control Module) thought the emergency Park Release lever in the car had been pulled and wouldn't let me shift into park. The car did would go into Park but the indicater light on the handle wouldn't come on and confirm this to the TCM. I had taken this to Chrysler garage and they wanted to sell me a $2200 Transmission. I took it to a little shop out in the country by me who charged me $50/hr rather than $140/hr that those so called expert Chrysler mechanics charge, Ended being a $180 stone . Problem solved.

 

Thanks for the update. Very much appreciated.

Kudos to the mechanic - good old fashion trouble-shooting. Definitely a keeper.

 

I was thinking about replacing my spark plugs. My car came with sp149125af spark plug. They run around $22 ea. sp149125ae spark plug are much cheaper and used in the jeep Wrangler. Same engine I have in my Chrysler 300 - 3,6L Pentastar
Anybody know what is difference between sp149125af spark plug and sp149125ae spark plug
Ive looked around on internet for answer but cannot find the answer. Both are iridium plugs.

 

The af plug is a later revision than the ae plug. The reason for the revision is rarely provided and it may be simply a change of manufacturer. Functionally, they are equivalent.

I would suggest using 'rockauto.com' and getting the NGK iridiums as NGK is typically the OEM supplier. Chrysler/fca has used either Champion or NGK as OEM spark plug suppliers sp either would be good.