
428
uuWhen Driving uTire Pressure Monitoring System (TPMS)
Driving
Tire Pressure Monitoring System (TPMS)
Instead of directly measuring the pressu re in each tire, the TPMS on this vehicle 
monitors and compares the rolling radius  and rotational characteristics of each 
wheel and tire while you are driving to determine if one or more tires are 
significantly under-inflated. This will caus e the low tire pressure/TPMS indicator to 
come on and a message to appear on  the driver information interface.
You must start TPMS calibration every time you:
• Adjust the pressure in one or more tires.
• Rotate the tires.
• Replace one or more tires.
Before calibrating the TPMS:
• Set the cold tire pressu re in all four tires.
2Checking Tires  P. 501
Make sure:
•The vehicle is at a complete stop.
• The gear position is in 
(P.
• The power mode is in ON.
■TPMS Calibration
1Tire Pressure Monitoring System (TPMS)
The system does not monitor the tires when driving 
at low speed.
Conditions such as low  ambient temperature and 
altitude change directly a ffect tire pressure and can 
trigger the low tire pressure/TPMS indicator to come on.
Tire pressure checked and inflated in:
•Warm weather can beco me under-inflated in 
colder weather.
•Cold weather can become  over-inflated in warmer 
weather.
The low tire pressure/TPMS indicator will not come 
on as a result of over inflation.
The TPMS may not function pr operly if tire type and 
size are mixed. Make sure to use the same size and 
type of tire. 2 Checking and Maintaining Tires  P. 501
The low tire pressure/TPMS indicator may come on 
with a delay or may not come on at all when:
•You rapidly accelerate, decelerate, or turn the 
steering wheel.
•You drive on snowy or slippery roads.•Tire chains are used.
The low tire pressure/TPMS indicator may come on 
under the following conditions:
•There is a heavier and uneve n load on the tires than 
the condition at calibration.
•Tire chains are used.
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429
uuWhen Driving uTire Pressure Monitoring System (TPMS)
Driving
You can calibrate the system from the 
customized feature on  the audio/information 
screen.
1. Set the power mode to ON.
2. Select .
3. Select  Settings .
4. Select  Vehicle .
5. Select  TPMS Calibration .
6. Select  Cancel  or Calibrate .
u When the calibration is complete, the 
display returns to the customization 
menu screen.
• If the  Calibration Failed To Start.  
message appears, repeat steps 4-6.
• The calibration process finishes 
automatically.1TPMS Calibration
•The calibration process  requires approximately 30 
minutes of cumulative dr iving at speeds between 
30-65 mph (48-105 km/h).
•During this period, if the power system is turned on 
and the vehicle is not moved within 45 seconds, you 
may notice the low tire pressure/TPMS indicator 
comes on briefly. This is  normal and indicates that 
the calibration process is not yet complete.
If tire chains are installed, remove them before 
calibrating the TPMS.
If the low tire pressure/TPMS indicator comes on even 
when the properly inflated specified regular tires are 
installed, have your vehicl e checked by an authorized 
Honda Clarity Plug-In  Hybrid dealer.
We recommend that the tires be replaced with the 
same brand, model, and size  as the originals. Ask an 
authorized Honda Clarity Pl ug-In Hybrid dealer for 
details.
The indicators for the Vehicle Stability Assist ® (VSA ®) 
System, Vehicle Stability Assist ® (VSA ®) OFF, low tire 
Pressure/TPMS and Collision Mitigation Braking 
System
TM (CMBSTM) may come on along with a 
message in the driver information interface after 
reconnecting the 12-volt  battery. Drive a short 
distance at more than 12 mph (20 km/h). The 
indicator should go off. If  it does not, have your 
vehicle checked by an aut horized Honda Clarity Plug-
In Hybrid dealer.
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430
uuWhen Driving uTire Pressure Monitoring System (TPMS) - Required Federal Explanation
Driving
Tire Pressure Monitoring  System (TPMS) - Required 
Federal Explanation
Each tire, including the spare (i f provided), should be checked 
monthly when cold and inflated  to the inflation pressure 
recommended by the vehicle manufacturer on the vehicle placard 
or tire inflation pressure label.
(If your vehicle has tires of a different size than the size indicated 
on the vehicle placard or tire infl ation pressure label, you should 
determine the proper tire inflat ion pressure for those tires.)
As an added safety feature, your  vehicle has been equipped with 
a tire pressure monitoring system  (TPMS) that illuminates a low 
tire pressure telltale 
when one or more of your tire s is significantly under-inflated.
Accordingly, when the low tire pr essure telltale illuminates, you 
should stop and check your tires  as soon as possible, and inflate 
them to the proper pressure.
Driving on a significantly under-in flated tire causes the tire to 
overheat and can lead to tire fail ure. Under-inflation also reduces 
fuel efficiency and tire tread li fe, and may affect the vehicle’s 
handling and stopping ability.
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431
uuWhen Driving uTire Pressure Monitoring System (TPMS) - Required Federal Explanation
Driving
Please note that the TPMS is not a substitute for proper tire 
maintenance, and it is the driver ’s responsibility to maintain 
correct tire pressure, even if un der-inflation has not reached the 
level to trigger illumination of th e TPMS low tire pressure telltale.
Your vehicle has also been equi pped with a TPMS malfunction 
indicator to indicate when the system is not operating properly. 
The TPMS malfunction indicator is  combined with the low tire 
pressure telltale. When the syst em detects a malfunction, the 
telltale will flash fo r approximately one minute and then remain 
continuously illumina ted. This sequence will continue upon 
subsequent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the system may 
not be able to detect or signal  low tire pressure as intended.
TPMS malfunctions may  occur for a variety of reasons, including 
the installation of replacement or alternate tires or wheels on the 
vehicle that prevent the TPMS  from functioning properly.
Always check the TPMS  malfunction telltale after replacing one or 
more tires or wheels on your  vehicle to ensure that the 
replacement or alternate tires  and wheels allow the TPMS to 
continue to function properly.
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432
uuWhen Driving uLaneWatchTM
Driving
LaneWatchTM
LaneWatch is an assistance system that allows you to check the passenger side rear 
areas displayed on the audio/in formation screen when the turn signal is activated to 
the passenger’s side. A camera in the passenger side door mirror monitors these 
areas and allows you to check  for vehicles, in addition to your visual check and use 
of the passenger door mirror. You can also keep the system on for your convenience 
while driving.1 LaneWatchTM
Important Safety Reminder
Like all assistance systems, LaneWatch has 
limitations. Over reliance on LaneWatch may result in 
a collision.
The LaneWatch func tion can be affected by weather, 
lighting (including headli ghts and low sun angle), 
ambient darkness, camera  condition, and loading.
The LaneWatch may not prov ide the intended display 
of traffic to the side and rear under the following 
conditions:
•Your vehicle’s suspension has been altered, 
changing the height of the vehicle.
•Your tires are over or under inflated.•Your tires or wheels are of varied size or 
construction.
3WARNING
Failure to visually confirm that it is safe to 
change lanes before doing so may result in 
a crash and serious injury or death.
Do not rely only on LaneWatch while 
driving.
Always look in your mi rrors, to either side 
of your vehicle, and behind you for other 
vehicles before changing lanes.
12
Camera
Move the turn signal 
lever to the passenger 
side.
Press the LaneWatch 
button.The passenger side view 
display appears on the 
audio/information screen.
The system activates when you:
The system deactivates when you press 
the LaneWatch button again.
Audio/Information Screen
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440
uuBraking uAnti-lock Brake System (ABS)
Driving
Anti-lock Brake System (ABS)
Helps prevent the wheels from locking up, an d helps you retain steering control by 
pumping the brakes rapidly, much faster than you.
The electronic brake distribution (EBD) system, which is part of the ABS, also 
balances the front-to-rear braking distri bution according to vehicle loading.
You should never pump the brake pedal.  Let the ABS work for you by always 
keeping firm, steady pressure on the brake pe dal. This is sometimes referred to as 
“stomp and steer.”
■ABS operation
You may hear an operating noise when the  ABS is working. Depress the brake pedal 
and keep holding the pedal firmly down. On  dry pavement, you will need to press 
on the brake pedal very hard before the ABS activates. However, you may feel the 
ABS activate immediately if you are trying to stop on snow or ice.
ABS may activate when you depress  the brake pedal when driving on:
• Wet or snow covered roads.
• Roads paved with stone.
• Roads with uneven surfaces, such as potholes, cracks, manholes, etc.
When the vehicle speed goes unde r 6 mph (10 km/h), the ABS stops.
■ABS1Anti-lock Brake System (ABS)
NOTICE
The ABS may not function correc tly if you use a tire of 
the wrong size or type.
If the ABS  indicator comes on while driving, there 
may be a problem with the system.
While normal braking will not  be affected, there is a 
possibility that the ABS wi ll not be operating. Have 
your vehicle checked by an  authorized Honda Clarity 
Plug-In Hybrid dealer immediately.
The ABS is not designed  for the purpose of reducing 
the time or distance it takes for a vehicle to stop: It is 
designed to limit brake lo ckup which can lead to 
skidding and loss of steering control.
In the following cases, yo ur vehicle may need more 
distance to stop than a vehicle without the ABS:
•You are driving on rough or uneven road surfaces, 
such as gravel or snow.
•The tires are equipped with tire chains.
The following may be observed with the ABS system:
•Motor sounds coming from the engine 
compartment when the brakes are applied, or 
when system checks are being performed after the 
power system has been turned on and while the 
vehicle accelerates.
•Brake pedal and/or the ve hicle body vibration when 
ABS activates.
These vibrations and sou nds are normal to ABS 
systems and are no cause for concern.
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473
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 474
Safety When Performing Maintenance...475Parts and Fluids Used in Maintenance Service ........................................... 476
Maintenance Minder
TM..................... 477
Maintenance Under the Hood Maintenance Items Under the Hood .. 482
Opening the Hood ........................... 483
Recommended Engine Oil ................ 484
Oil Check ......................................... 485
Adding Engine Oil ............................ 486
Changing the Engine Oil and Oil Filter ...487 Engine Coolant ................................ 490
Cooling System ................................ 492
Transmission Fluid ............................ 494
Brake Fluid ....................................... 494
Refilling Window Washer Fluid......... 495
Replacing Light Bulbs ....................... 496Checking and Maintaining Wiper 
Blades .......................................... 498
Checking and Maintaining Tires
Checking Tires ................................. 501
Tire and Loading Information Label .. 502
Tire Labeling .................................... 502
DOT Tire Quality Grading (U.S. Vehicles).. 504
Wear Indicators ............................... 506
Tire Service Life ................................ 506
Tire and Wheel Replacement ........... 507
Tire Rotation .................................... 508
Winter Tires ..................................... 509
12-Volt Battery ................................. 510
Remote Transmitter Care Replacing the Button Battery ........... 512
Climate Control System Maintenance.. 513CleaningInterior Care .................................... 515
Exterior Care.................................... 517
Accessories and Modifications ........ 521
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474
Maintenance
Before Performing Maintenance
Inspection and Maintenance
For your safety, perform all listed inspections and maintenance to keep your vehicle 
in good condition. If you become aware of  any abnormality (noise, smell, insufficient 
brake fluid, oil residue on the ground, etc .), have your vehicle inspected by an 
authorized Honda Clar ity Plug-In Hybrid dealer. (Note,  however, that service at an 
authorized Honda Clar ity Plug-In Hybrid dealer is not mandatory to keep your 
warranties in effect.)
■Daily inspections
Perform inspections before long distance  trips, when washing the vehicle, or when 
refueling.
■Periodic inspections
• Check the brake fluid level monthly.
2 Brake Fluid  P. 494
•Check the tire pressure monthly. Examin e the tread for wear and foreign objects.
2Checking and Maintaining Tires  P. 501
•Check the operation of the exterior lights monthly.
2 Replacing Light Bulbs  P. 496
•Check the condition of the wiper bl ades at least every six months.
2Checking and Maintaining Wiper Blades P. 498
■Types of Inspection and Maintenance
1Inspection and Maintenance
Maintenance, replacement, or repair of 
emissions control devices and systems may be 
done by any automotive repair establishment or 
individuals using parts that are “certified” to 
EPA standards.
According to state and fede ral regulations, failure to 
perform maintenance on the maintenance main 
items marked with # will  not void your emissions 
warranties. However, all ma intenance services should 
be performed in accordan ce with the intervals 
indicated by the driver  information interface.
2 Maintenance Service Items  P. 479
If you want to perform  complex maintenance tasks 
that require more skills a nd tools, you can purchase a 
subscription to the Service Express website at 
www.techinfo.honda.com .
2 Authorized Manuals  P. 577
If you want to perform ma intenance yourself, make 
sure that you have the necessary tools and skills first.
After performing ma intenance, update the records in 
the separate maintenance booklet.
U.S. models
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