2021 RAM 1500 check engine

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Page 373 of 496

RAM 1500 2021  Owners Manual 
SAFETY371
PERIODIC SAFETY CHECKS YOU SHOULD 
M
AKE OUTSIDE THE VEHICLE
Tires 
Examine tires for excessive tread wear and 
uneven wear patterns. Check for stones, nails, 
glass, or other objects lodge

Page 397 of 496

RAM 1500 2021  Owners Manual 
395
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE 
ENGINE 
Your vehicle is equipped with an automatic oil 
change indicator system. The oil change 
indicator system will remind you that

Page 399 of 496

RAM 1500 2021  Owners Manual 
SERVICING AND MAINTENANCE397
Mileage or time passed (whichever 
comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5

Page 401 of 496

RAM 1500 2021  Owners Manual 
SERVICING AND MAINTENANCE399
SCHEDULED SERVICING — DIESEL ENGINE 
Your vehicle is equipped with an automatic oil 
change indicator system. The oil change 
indicator system will remind you that it i

Page 410 of 496

RAM 1500 2021  Owners Manual 
408SERVICING AND MAINTENANCE  
CHECKING OIL LEVEL
To ensure proper engine lubrication, the engine 
oil must be maintained at the correct level. 
Check the oil level at regular intervals, such as 
eve

Page 417 of 496

RAM 1500 2021  Owners Manual 
SERVICING AND MAINTENANCE415
DIESEL EXHAUST FLUID
Diesel Exhaust Fluid (DEF) sometimes known 
simply by the name of its active component, 
UREA—is a key component of Selective Catalytic 
Reduction

Page 423 of 496

RAM 1500 2021  Owners Manual 
SERVICING AND MAINTENANCE421
overheating. If this occurs, stop the vehicle, turn 
off the engine and allow it to cool. Service, 
including a tune-up to manufacturer's 
specifications, should be o

Page 425 of 496

RAM 1500 2021  Owners Manual 
SERVICING AND MAINTENANCE423
NOTE:
It is the owner's responsibility to maintain the 
proper level of protection against freezing 
according to the temperatures occurring in 
the area where the