Manufacturer-recommended service intervals for the Oil Change Indicator System and open recall alerts for your 2021 Chrysler 300.
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Chrysler's Oil Change Indicator tracks engine load and duty cycle, then messages when oil life is used up — capped at 10,000 miles or 12 months, whichever comes first. The 3.6L Pentastar V6 (300, Pacifica, Town & Country, Voyager) is long-interval by design: spark plugs at 100,000 miles and no timing belt. Minivans in family duty count as 'severe service' more often than owners think — frequent short trips shorten the oil indicator's countdown, and that's the system working correctly.
VISIBILITY:WINDSHIELD
Campaign #21V516000 · Aug 7, 2021
Issue: Chrysler (FCA US, LLC) is recalling certain 2020-2021 Dodge Challenger, Dodge Charger, and Chrysler 300 vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."
Risk: A windshield that separates from the vehicle during a crash can increase the risk of injury.
Fix: Dealers will remove and replace the front windshield urethane sealant, free of charge. Owner notification letters were mailed on August 31, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y47.
AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
Campaign #24V198000 · Mar 14, 2024
Issue: Chrysler (FCA US, LLC) (Stellantis) is recalling certain 2018-2021 Dodge Charger and Chrysler 300 vehicles. The right and left side curtain air bag inflators may rupture due to a manufacturing defect.
Risk: An inflator rupture may result in sharp metal fragments striking occupants, resulting in injury or death.
Fix: Dealers will replace both side curtain air bags, free of charge. Owner notification letters were mailed beginning February 20, 2025. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 19B.
Critical for safety and preventing major damage
Change oil when the indicator message appears — never beyond 10,000 miles or 12 months. Pentastar 3.6L uses 0W-20; PT Cruiser's 2.4L uses 5W-30. Short-trip city driving will trigger the indicator well before 10,000 miles.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate every 8,000 miles or at every oil change. Front-heavy minivans (Pacifica, Voyager) chew front tires quickly without rotation.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect pads, rotors, and parking brake at every oil change. Loaded minivans and the heavy 300 wear rear pads faster than expected — check both axles.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
PT Cruiser's 2.4L is a timing-belt engine: replace around 100,000 miles (check your manual's exact interval for the year). Do the water pump and tensioner in the same job — the labor overlaps almost entirely.
Estimated cost — typical U.S. ranges
Dealer
~$935–$1175
Shop
~$655–$825
DIY
Pro only
On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.
Keeps your vehicle running smoothly and efficiently
Minivans (62TE six-speed): ATF+4 service every 60,000 miles under family duty. 300 with the ZF/TorqueFlite 8-speed: Chrysler lists no normal-service interval, but specialists recommend fluid service around 60,000-100,000 miles. ATF+4 or the specified 8-speed fluid only.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Pentastar 3.6L: iridium plugs at 100,000 miles. PT Cruiser 2.4L: roughly every 30,000 miles with conventional plugs — check the manual for your year.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Replace every 30,000 miles. On the Pentastar it's a quick top-of-engine job; inspect sooner in dusty climates.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Inspect from 60,000 miles and replace on evidence of cracking or glazing. A failed belt on the Pentastar takes the water pump drive with it — don't run it to destruction.
Estimated cost — typical U.S. ranges
Dealer
~$195–$235
Shop
~$135–$165
DIY
~$20–$50
DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.
Extends the life of your vehicle and improves comfort
Replace every 20,000 miles — behind the glovebox on Pacifica, Voyager, and 300. Family-hauler duty (pets, gravel school lots) argues for yearly.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Stellantis OAT coolant: first replacement at 10 years or 150,000 miles per the schedule; many shops suggest refreshing by 100,000 miles. Use OAT-compatible coolant only — mixing types gels the system.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Test annually once the battery passes 3 years old. Pacifica's stop-start system uses a pricier AGM or dual-battery setup — weak batteries throw confusing electrical faults first.
Estimated cost — typical U.S. ranges
Dealer
~$225–$390
Shop
~$160–$280
DIY
~$130–$250
Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.
What drivers and federal regulators have officially reported about the 2021 Chrysler 300.
NHTSA has 19 complaints on file for the 2021 Chrysler 300 (2023-02 → 2026-05). We haven't reviewed and grouped them yet for this specific vehicle — for now, the full list lives on NHTSA.
Top reported components: AIR BAGS (8) · ENGINE (4) · SEAT BELTS (3)
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 27, 2026. Investigation data refreshed Jul 27, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2021 Chrysler 300 reflects Chrysler's published service intervals and the Oil Change Indicator System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.