Page 155 of 591

153Continued
Controls
Security System Immobilizer System The immobilizer system prevents a key th at has not been pre-registered from 
starting the power system. Each key cont ains electronic transmitters that use 
electronic signals to verify the key.
Pay attention to the follo wing when pressing the  POWER  button:
• Do not allow objects that emit  strong radio waves near the  POWER  button.
• Make sure the key is not covered  by or touching a metal object.
• Do not bring a key from another vehicle’s immobilizer system near the  POWER  
button.
• Do not put the key near magnetic items.  Electronic devices, such as televisions 
and audio systems emit strong magnetic  fields. Note that even a key chain can 
become magnetic.
Security System Alarm The security system alarm activates when  the trunk, hood or doors are forcibly 
opened. The alarm does not activate if the trunk or doors are opened with the key, 
remote transmitter or smart entry system.
However, the alarm activates if a door is op ened with the key and then the hood is 
opened before the power mode is set to ON.
■ When the security system alarm activates
The horn sounds intermittently  and some exterior lights flash.
■ To deactivate the security system alarm
Unlock the vehicle using the key, remote  transmitter or smart entry system. The 
system, along with the horn and flashing lights, is deactivated. 1 Immobilizer System NOTICE
Leaving the key in the vehicl e can result in theft or 
accidental movement of the vehicle.
Always take the key with you whenever you leave the 
vehicle unattended.
Do not alter the system or  add other devices to it.
Doing so may damage the system and make your 
vehicle inoperable.
Canadian models only:  Apply and hold the brake 
pedal before turning the vehicle on the first time after 
the 12-volt battery ha s been disconnected.
1 Security System Alarm
Do not alter the system or  add other devices to it.
Doing so may damage the system and make your 
vehicle inoperable.
The security alarm continues for a maximum of two 
minutes until the security system alarm deactivates.18 CLARITY PHEV CSS-31TRW6000.book  153 ページ  2017年8月31日 木曜日 午後2時49分 
     
        
        Page 435 of 591

Continued
433 uu Braking u Brake System
Driving
Your vehicle is equipped with disc brakes at  all four wheels. The brake assist system 
increases the stopping force when you  depress the brake pedal hard in an 
emergency situation. The an ti-lock brake system (ABS)  helps you retain steering 
control when brak ing very hard.2 Brake Assist System  P. 438
2 Anti-lock Brake System (ABS)  P. 437
■ Foot Brake 1 Foot Brake
Check the brakes after driving through deep water, 
or if there is a buildup of  road surface water. If 
necessary, dry the brakes by  lightly depressing the 
pedal several times.
If you hear a continuous me tallic friction sound when 
applying the brakes, this is  caused by the brake wear 
indicator rubbing on the  brake rotor and indicates 
that the brake pads need to be replaced. Have the 
vehicle checked by an aut horized Honda Clarity Plug-
In Hybrid dealer. If you  hear only an occasional 
squeak or squeal when y ou initially apply the brake 
pedal, this may be nor mal and caused by high 
frequency vibration of th e brake pads against the 
rotating brake disc.18 CLARITY PHEV CSS-31TRW6000.book  433 ページ  2017年8月31日 木曜日 午後2時49分 
     
        
        Page 473 of 591

471Maintenance This chapter discusses basic maintenance.
Before Performing Maintenance
Inspection and Maintenance ............ 472
Safety When Performing Maintenance...473
Parts and Fluids Used in Maintenance 
Service ........................................... 474
Maintenance Minder TM
..................... 475
Maintenance Under the Hood
Maintenance Items Under the Hood .. 480
Opening the Hood ........................... 481
Recommended Engine Oil ................ 482
Oil Check ......................................... 483
Adding Engine Oil ............................ 484
Changing the Engine Oil and Oil Filter ...485 Engine Coolant ................................ 488
Cooling System ................................ 490
Transmission Fluid ............................ 492
Brake Fluid ....................................... 492
Refilling Window Washer Fluid......... 493
Replacing Light Bulbs ....................... 494
Checking and Maintaining Wiper 
Blades .......................................... 496
Checking and Maintaining Tires
Checking Tires ................................. 499
Tire and Loading Information Label .. 500
Tire Labeling .................................... 500
DOT Tire Quality Grading (U.S. Vehicles).. 502 Wear Indicators ............................... 504
Tire Service Life ................................ 504
Tire and Wheel Replacement ........... 505
Tire Rotation .................................... 506
Winter Tires ..................................... 507
12-Volt Battery ................................. 508
Remote Transmitter Care
Replacing the Button Battery ........... 510
Climate Control System Maintenance .. 511
Cleaning
Interior Care .................................... 513
Exterior Care.................................... 515
Accessories and Modifications ........ 51918 CLARITY PHEV CSS-31TRW6000.book  471 ページ  2017年8月31日 木曜日 午後2時49分 
     
        
        Page 574 of 591

572
Information Emissions Testing Testing of Readiness Codes Your vehicle has readiness codes as part of the onboard self diagnostic system.
Some states use these codes for testing to  verify whether your vehicle’s emissions 
components are working properly.
The codes may not be read properly if te sting is performed just after the 12-volt 
battery has gone dead or been disconnected.
To check if they are set, set the power  mode to ON, without turning the power 
system on. The malfunction indicator lamp w ill come on for several seconds. If it 
then goes off, the readiness co des are set. If it blinks fi ve times, the readiness codes 
are not set.
If you are required to have your vehicle te sted before the readiness codes are ready, 
prepare the vehicle for retest ing by doing the following:
1. Fill the gas tank to approximately 3/4 full.
2. Park the vehicle and leave the power  system off for 6 hours or more.
3. Make sure the ambient temperature is  between 40°F and 95°F (4°C and 35°C).
4. Turn the power system on.
5. Use the  HV  button to select HV or HV Charge.2 HV Button  P. 16
6. Select a nearby, lightly traveled major hi ghway where you can maintain a speed 
of 50 mph (80 km/h) over for at least 20 minutes. Drive on the highway in  ( D
 
with SPORT mode. Do not use cruise control.
7. Drive in city or suburban traffic for at le ast 10 minutes. When  traffic conditions 
allow, let the vehicle coast for several se conds without using the accelerator pedal 
or the brake pedal.
8. Park the vehicle and leave the power system off for 40 minutes. 1 Testing of Readiness Codes
The readiness codes are erased when the 12-volt 
battery is disconnected, and set again only after 
several days of driving unde r a variety of conditions.
If a testing facility determines that the readiness 
codes are not set, you may be  requested to return at 
a later date to complete the test.
If the testing facility determines the readiness codes 
are still not set, see an au thorized Honda Clarity Plug-
In Hybrid dealer.18 CLARITY PHEV CSS-31TRW6000.book  572 ページ  2017年8月31日 木曜日 午後2時49分