check engine TOYOTA AYGO 2021 Owner's Manual

2724-6. Using the driving support systems
AYGO_OM_Europe_OM9A012E
Stop & Start system
With the clutch pedal fully depressed, stop the vehicle. Then shift
the shift lever to N.
Release the clutch pedal.
The engine will stop and the Stop
& Start indicator will come on.
Check that the shift lever is in N and depress the clutch pedal.
The engine will restart. The Stop & Start indicator will go off.
(In this situation, releasing the clutch pedal will not stop the engine again.)
: If equipped
The Stop & Start system stops and restarts the engine according
to the clutch pedal operation for stopping and starting the vehi-
cle.
Stopping the engine
Restarting the engine

2784-6. Using the driving support systems
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WARNING
■When the Stop & Start system is operating
● Keep the shift lever in N and apply the brake pedal or parking brake for
safety while the engine is stopped due to the Stop & Start system (while
the Stop & Start indicator is on).
Unexpected accidents may occur due to the automatic engine start func-
tion.
● Do not leave the vehicle while the engine is stopped due to the Stop &
Start system (while the Stop & Start indicator is on).
Unexpected accidents may occur due to the automatic engine start func-
tion.
● Ensure that the engine is not stopped by the Stop & Start system while the
vehicle is in a poorly ventilated area. The engine may restart due to the
automatic engine start function, causing exhaust gases to collect and
enter the vehicle and resulting in death or a serious health hazard.
NOTICE
■ To ensure the system operates correctly
If any one of the following situations occurs, the Stop & Start system may
not operate correctly, thus, please have your vehicle checked by any autho-
rized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
● While the driver’s seat belt is fastened, the driver’s and front passenger’s
seat belt reminder light flashes.
● Even when the driver’s seat belt is not fastened, the driver’s and front pas-
senger’s seat belt reminder light remains off.
● Even when the driver’s door is closed, the open door warning light comes
on, or the interior light comes on when the interior light switch is in the door
position.
● Even when the driver’s door is opened, the open door warning light does
not come on, or the interior light does not come on when the interior light
switch is in the door position.

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4-7. Driving tips
Driving
AYGO_OM_Europe_OM9A012E
Winter driving tips
●Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire
chains
* for the front tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
*: Tire chains cannot be mounted on the 15-inch tires.
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
●To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
●Check for and remove any excess ice or snow that may have accu-
mulated on the exterior lights, vehicle’s roof, chassis, around the
tires or on the brakes.
●Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

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7Maintenance and care
AYGO_OM_Europe_OM9A012E7-1. Maintenance and care
Cleaning and protecting
the vehicle exterior .......... 378
Cleaning and protecting
the vehicle interior ........... 382
7-2. Maintenance
Maintenance
requirements.................... 385
7-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ...................... 387
Hood .................................. 390
Positioning a floor jack ....... 392
Engine compartment.......... 393
Clutch pedal (vehicles
with a manual
transmission) ................... 403
Tires ................................... 404
Tire inflation pressure ........ 410
Wheels ............................... 412
Air conditioning filter .......... 414
Wireless remote control/
electronic key battery....... 415
Checking and replacing
fuses ................................ 418
Light bulbs ......................... 426

3867-2. Maintenance
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■ Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
● Engine misses, stumbling or pinging
● Appreciable loss of power
● Strange engine noises
● A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
● Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
● Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
● Vehicle pulls to one side when driven straight on a level road
● Strange noises related to suspension movement
● Loss of brake effectiveness, spongy feeling brake pedal or clutch pedal,
pedal almost touches the floor, vehicle pulls to one side when braking
● Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer as soon as pos-
sible. Your vehicle may need adjustment or repair.
WARNING
■ If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible death or serious injury.
■ Handling of the battery
Battery posts, terminals and related accessories contain lead and lead com-
pounds which are known to cause brain damage. Wash your hands after
handling. ( P. 399)

3917-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM9A012E
WARNING
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
■ After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your
head or body.
■ When detaching the support rod from the clip
● Take care to prevent hands or arms from being hit against the inside of the
engine hood. Failure to do so may result in serious injury.
NOTICE
■ When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood with the support rod up could cause the hood to bend.
● Hold the support protector area to pre-
vent burns.
Support protector

3947-3. Do-it-yourself maintenance
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With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■Checking the engine oil
Park the vehicle on level ground. After warming up the engine
and turning it off, wait more than 5 minutes for the oil to drain
back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end,
pull the dipstick out and
check the oil level.
Low
Normal
Excessive
The shape of the dipstick may differ depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
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3957-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM9A012E■
Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
■Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.
●When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
●If low quality oil or oil of an inappropriate viscosity is used
●When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
●When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selectionP. 512
Items Clean funnel

3967-3. Do-it-yourself maintenance
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WARNING
■Used engine oil
● Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground.
Call any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer, service station or auto parts store for information con-
cerning recycling or disposal.
● Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
● Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.

3977-3. Do-it-yourself maintenance
7
Maintenance and care
AYGO_OM_Europe_OM9A012E
The coolant level is satisfactory if it is between the “FULL” or “F” and
“LOW” lines on the reservoir when the engine is cold.
Ty pe A
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
Ty pe B
Reservoir cap
“F” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“F” line.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about coolant, contact any authorized Toyota retailer or Toy-
ota authorized repairer, or any reliable repairer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock
and water pump.
If you cannot find a leak, have any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer, test the cap and check for leaks in the
cooling system.
Engine coolant
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