Mk4 2021 Jazz Brake failure

[Lord Voltermore]

I quickly found I could control the amount of braking quite effectively   just by varying how much I was pulling on the switch.  Not something you should do habitually of course as you are not in complete control of the steering etc,  but  I would recommend   trying it out somewhere quiet. 
 

Now I’m confused, I was under the impression that the handbrake switch was simply a spring loaded on/off switch, with no means of varying the amount of braking effect.
I have my handbrake set to auto release, when moving off and in normal driving, use it when I’m likely to be stopped for some time, ie traffic lights etc.
So , how do I vary the amount of handbrake effort under those conditions?

I didnt mean for normal   use   of the handbrake when you are stopped. For that I have always found my standard 'flick 'the handbrake will stay on and  hold the car however steep the hill.  I dont know if you can apply it  any 'harder'.

But in the unlikely event of having to use the handbrake for an emergency stop  I found that  you need to keep pulling  on the switch.  The rate of braking seems to progressively increase  as you slow down.  I dont know if this is  servo assistance gradually  being   increased , or just because there is progressively less kinetic energy  to be overcome .Or  maybe the electric handbrake  servos are  coming into play  .     If you keep the switch pulled up the car stops quite rapidly.  Possibly more rapidly than you need or is advisable in heavy traffic.      I found that by repeatedly releasing and reapplying the  switch   I had a lot more control over the rate  at  which the car came to a stop.   

I hope this explains it.  It might make more sense if you try it yourself  somewhere quiet.  Until now I have  de rusted my discs  using the footbrake. But this may be a better way.

[Jazzik]

Until now I have  de rusted my discs  using the footbrake. But this may be a better way.

Using the handbrake is certainly the better way to derust the discs. With the foot brake you have to brake quite hard to really activate the rear brakes. Here https://clubjazz.org/forum/index.php?action=dlattach;topic=16448.0;attach=10709 you can read that all four brakes are applied with the handbrake.
And as I said: by using the handbrake like this every now and then I keep my discs shiny (even the rear discs!).

[yooser]

My grandchildren have tested the handbrake switch for me !!! It really works well and if you're not expecting a good braking power , then I say BEWARE.
They have been warned to leave all the switches and buttons alone.

[Lord Voltermore]

It wont be many years before grandchildren will look at a manual handbrake with bewilderment  

[CB72]

It wont be many years before grandchildren will look at a manual handbrake with bewilderment

Or any handbrake if autonomous vehicles take off

[BeckyDuck101]

Hi all,
As a victim of this failure we are currently without a car until June! Someone sent me the following link on Facebook which indicates that this is a product recall in Japan and so should also be in the UK rather than us being charged £1600 for the replacement part, when it eventually comes. Unfortunately my Japanese is a bit rusty so can't 100% verify!
Has anyone got more up to date information? Our dealership don't seem to be doing a huge amount on our behalf.
 https://www.honda.co.jp/recall/auto/info/231208_683.html?fbclid=IwAR3cv03bAX-1RKirwgKYSeq-7FFvU2ViGMjQ_9fZdezR5K-HzNc6C38cmZ4
Many thanks, Becky

[madasafish]

What was wrong with the decades old, reliable, servo assisted hydraulic brakes

These fancy systems seem unreliable to me

I can recall plenty of diy articles etc about  repairing old type servos and braking systems.  Less complex maybe  but  not infallible.

You omitted to add:
"and the cables had to be adjusted regularly.."

My first car was a 1929 Riley 9 Monaco with cable bakes.

I remember when cars had a mechanical connection between the brakes and your foot,  some just had a cable which would break on occasion. Didn't make them anymore reliable but maybe a bit cheaper to repair and lot of repairs and servicing you could do yourself.

[Saycol]

Rather than discuss the history of handbrakes, could we perhaps focus on the original post and this very expensive brake failure? BigT and BeckyDuck101 makes two forum members who have this problem. Rather worrying in terms of percentage of forum members.

I don’t have the IT skills to attempt translating the Japanese Honda website, but would appreciate it if somebody could.

Lastly, as my Crosstar is coming up to 3 years old, this brake failure issue has convinced me that purchasing the extended warranty could be a wise move.

[peteo48]

What was wrong with the decades old, reliable, servo assisted hydraulic brakes

These fancy systems seem unreliable to me

Absolutely - if it ain't broke don't fix it!

[FMIB]

Improvement measures for 14 car models such as Fit
<If symptoms occur on the day of the dealer's holiday>
If you are a Honda Total Care member, please contact the emergency support center.
For general customers, please contact JAF or the insurance company's road service.
Summary

The part of the defect (part name)   
Braking device (brake operating simulator)
The status of the structure, device or performance that is deemed to be in a defective state and its cause   
In the brake operating simulator of the electric servo brake system, the manufacturing process is inappropriate, so the assembly oil used during production may penetrate into the pressure sensor. Therefore, in the process of use, the resistance part in the sensor will corrode, the output value will be abnormal, the warning light will turn on, the fail safe may work, and the operation power of the brake pedal may increase.
Explanation diagram of improvement points

Contents of improvement measures   
Replace the brake operating simulator with a countermeasure product.
However, since it takes time to supply improvement measures, we will add a self-diagnosis software that displays the guidance to that effect on the multi-information display when there is a need for inspection for customers who wish.
In addition, as soon as the parts are ready, we will guide you to replace the parts again.
Measures to make automobile users and automobile specific maintenance companies aware of it   
・User: Notify by direct mail, etc.
・Automobile specific maintenance companies, etc.: It will be published in the bulletin published by the Nichiseiren.
Target range

car name
Model
Common name
The range of the chassis number of the target car and the production period
Number of target cars
Honda
 
DAA-GP5
Fit
GP5-1340860 to GP5-1355041
29th November, 2018 to 30th July 2019
10,690
GP5-3416481～GP5-3427251
From July 5, 2018 to September 30, 2019
9,198
GP5-5400095 to GP5-5400104
July 23, 2018 - September 2, 2019
9
GP5-8300042～GP5-8300065
From December 5, 2018 to July 9, 2019
19
GP5-9300992～GP5-9301441
From November 30, 2018 to July 9, 2019
341
DAA-GP6   
GP6-1307511 to GP6-1310700
29th November, 2018 to 30th July 2019
2,623
GP6-3404716 to GP6-3407074
July 6, 2018 - September 30, 2019
2,131
GP6-5400022 to GP6-5400029
August 28, 2018 - August 28, 2019
7
GP6-8300015 to GP6-8300023
December 10, 2018 - June 25, 2019
6
GP6-9300153 to GP6-9300249
29 November 2018 - 9 July 2019
82
6AA-GR3
GR3-1000032～GR3-1056551
January 21, 2020 - May 11, 2020
49,563
GR3-1200001～GR3-1218092
May 21, 3rd year of Reiwa - 3rd February, 4th year of Reiwa
18,069
GR3-3100001 to GR3-3100597
June 4, 3rd year of Reiwa - February 2nd, 4th year of Reiwa
595
GR3-7100001～GR3-7100002
January 17th, 2020 - January 31st, 2020
2
GR3-8000001～GR3-8000110
January 23, 2020 - March 30, 2020
91
GR3-8100001～GR3-8100046
June 25, 3rd year of Reiwa - 25th January 4th year of Reiwa
46
6AA-GR4
GR4-1000019～GR4-1009053
January 21, 2020 - May 11, 2020
8,359
GR4-1100002～GR4-1103731
May 21, 3rd year of Reiwa - 2nd February 4th year of Reiwa
3,718
GR4-7100001～GR4-7100002
May 21, 3rd Reiwa - January 17, 4th year of Reiwa
2
GR4-8000001～GR4-8000023
January 30, 2020 - November 18, 2020
21
GR4-8100001～GR4-8100012
July 15, 3rd to 17th January, 4th
12
6AA-GR6
GR6-1000012～GR6-1010878
January 27, 2020 - May 11, 2020
9,698
GR6-1100001～GR6-1103554
May 21, 3rd year of Reiwa - 3rd February, 4th year of Reiwa
3,553
6AA-GR8
GR8-1000004～GR8-1002181
January 29, 2020 - April 28, 2020
2,036
GR8-1100002～GR8-1100846
May 21, 3rd year of Reiwa - 3rd February, 4th year of Reiwa
843
DAA-GB7
FREED
FREED+
GB7-1074803 to GB7-1116767
From July 2, 2018 to September 10, 2019
36,721
GB7-5000680～GB7-5001009
From July 5, 2018 to September 3, 2019
283
GB7-6000944～GB7-6002392
July 2, 2018 - September 6, 2019
1,237
DAA-GB8
GB8-1013426 to GB8-1020658
July 2, 2018 - September 6, 2019
6,462
6AA-GB7
GB7-3100028～GB7-3166205
September 30, 2019 - February 4, 2020
61,907
GB7-7100002 to GB7-7100536
November 11th, 2019 - January 28th, 2020
503
GB7-8100001 to GB7-8101457
December 20, 2019 - January 27, 2020
1,430
6AA-GB8
GB8-3100014～GB8-3111929
From October 2nd, 2019 to February 4th, 2020
11,395
DAA-RU3
VEZEL
RU3-1318851～RU3-1371101
July 2, 2018 - August 18, 2020
45,739
RU3-6300002～RU3-6300356
August 8, 2019 - July 28, 2020
295
DAA-RU4
RU4-1304215～RU4-1315126
From July 3, 2018 to July 31, 2020
9,948
RU4-6300002～RU4-6300158
August 8, 2019 - July 20, 2020
144
6AA-RU3
RU3-1400004～RU3-1407986
From September 2nd, 2020 to February 15th, 3rd year
7,921
RU3-6400001～RU3-6400074
September 10, 2020 - February 9, 3rd, Reiwa
72
6AA-RU4
RU4-1400002～RU4-1401447
From September 2nd, 2020 to February 15th, 3rd year
1,443
RU4-6400001～RU4-6400049
From September 10, 2020 to February 8, 2020
49
6AA-RV5
RV5-1000027～RV5-1036982
April 8, 3rd year of Reiwa - 1 March 4, Reiwa
36,914
6AA-RV6
RV6-1000013 to RV6-1008944
April 8th, 3rd to February 28th, 4th year
8,918
6AA-RP5
step wagon
RP5-1072137～RP5-1099806
July 4, 2018 - January 6, 2020
25,005
RP5-1200005～RP5-1225427
From January 6, 2020 to December 27, 3, Reiwa
24,645
RP5-6000001～RP5-6000961
August 31, 2018 - December 26, 2019
800
RP5-6200002～RP5-6201368
January 8, 2020 - December 21, 3rd, Reiwa
1,332
DAA-GP7
SHUTTLE
GP7-2005505～GP7-2012108
November 28, 2018 - March 26, 2019
4,935
GP7-8000027 to GP7-8000044
December 3, 2018 - February 18, 2019
12
DAA-GP8
GP8-2001500～GP8-2002980
November 28, 2018 - March 21, 2019
1,234
6AA-GP7
GP7-2100008 to GP7-2123678
April 12, 2019 - November 2, 2020
20,515
GP7-2200001 to GP7-2210837
From November 17, 2020 to February 3, 2020
10,803
GP7-8100001～GP7-8100061
May 14, 2019 - September 30, 2020
51
GP7-8200001 to GP7-8200027
From November 30, 2020 to December 24, 3rd, Reiwa
27
6AA-GP8   
GP8-2100006 to GP8-2105507
April 12, 2019 - October 30, 2020
5,112
GP8-2200001 to GP8-2202784
From November 17, 2020 to February 3, 2020
2,781
GP8-8100001 to GP8-8100018
May 23, 2019 - October 29, 2020
17
GP8-8200001～GP8-8200008
November 30, 2020 - October 27, 3rd Reiwa
8
6AA-RC4
Odyssey
RC4-1158377 to RC4-1170213
July 2, 2018 - October 14, 2019
9,834
RC4-1200003 to RC4-1204708
November 5, 2019 - September 23, 2020
3,818
RC4-1300018～RC4-1319258
From 20th October, 2020 to 27th December 3rd year
19,199
6AA-RT5
CR-V
RT5-1000025～RT5-1005302
October 3, 2018 - October 25, 2019
3,648
RT5-1100001 to RT5-1100915
November 8th, 2019 - May 28th, 2020
658
RT5-1200002 to RT5-1202656
June 16, 2020 - October 29, 2020
2,590
RT5-1300001～RT5-1300994
November 8, 3rd Reiwa - 2nd February, 4th year of Reiwa
993
6AA-RT6
RT6-1000023 to RT6-1004622
October 3, 2018 - October 29, 2019
3,379
RT6-1100002 to RT6-1100725
November 8th, 2019 - May 28th, 2020
580
RT6-1200002 to RT6-1201975
June 16, 2020 - October 29, 2020
1,958
RT6-1300001～RT6-1300625
November 8, 3rd to January 26, 4th
625
6AA-ZE4
Insight
ZE4-1000066～ZE4-1009122
November 20, 2018 - November 1, 2019
6,924
ZE4-1100001～ZE4-1101960
From November 5th to May 16th, 2020
1,532
ZE4-1200006 to ZE4-1204256
May 27, 2020 - December 2, 2020
4,225
ZE4-1300001～ZE4-1300400
From December 7th to February 3rd, Reiwa 4th
400
DAA-GM4
GRACE
GM4-1206609～GM4-1214803
July 4, 2018 - July 31, 2020
7,117
GM4-5200024～GM4-5200037
July 4, 2018 - December 26, 2019
13
DAA-GM5
GM5-1201213～GM5-1203041
July 4, 2018 - July 30, 2020
1,711
GM5-5200003～GM5-5200008
August 29, 2018 - April 24, 2020
5
DAA-FR4
JADE
FR4-1100695 to FR4-1103549
July 3, 2018 - August 3, 2020
2,682
DAA-CR7
Accord
CR7-1008152 to CR7-1010094
July 12, 2018 - November 8, 2019
1,784
ZAA-ZC7
Honda e
ZC7-1000038 to ZC7-1001298
July 27, 2020 - January 24, 2020
1,238
ZBA-ZC4
CLARITY
ZC4-3200001 to ZC4-3200042
March 8, 2019 - August 7, 2019
32
ZC4-3300006 to ZC4-3300028
December 10, 2019 - September 1, 2020
22
6LA-ZC5
ZC5-1000229 to ZC5-1000450
July 13, 2018 - November 25, 2019
201
ZC5-1100002 to ZC5-1100031
December 26, 2019 - August 26, 3rd, Reiwa
28
 
(32 models in total)
(14 models in total)
(The entire range of the production period)
July 2, 2018 - March 1, 2020
(Total 525,568 units)
※This case was reported for improvement measures at the notification number "661" dated March 31, 2020, but since a new cause has been found, the improvement content will be changed and notified again.
※Part of the scope includes vehicles that are not subject to renovation.

[Lincolnshire Rambler]

Yes as two failures already I feel extended warranty heading to my purchase list before my jazz reaches 3 years old !

[coldstart]

@FMIB: Thank you for the explanation and the concise listing of vehicules affected!

I'm very comforted by the fact that Honda have already addressed this issue!

Nevertheless I can feel with the owners of affected cars - thanks to FMIB's information they should have it easier talking about this issue with their respective dealers.

[5thcivic]

If I put my VIN in the UK Honda site recalls field it says no issues.

[blythpower]

I think my Jazz has also developed the same fault.  All sorts of warning lights and virtually no brakes when pulling away. Brake pedal feels incredibly hard to achieve any stopping at all. Happened three times now.  Was hoping might just be 12V battery low, but have charged it and fault still appears.
Out of warranty in September 2023, so could be very expensive.  Scandalous on a car that's only done 13K miles

[Kremmen]

Honda seem to be heading for potentially serious warranty financial problems

Of late I've been reading about the 11G Civic 'Sticky Steering' that is affecting an increasing number of cars in the UK, plus the ever increasing number of 10G 1 litre destroyed engines due to the wet timing belt either prematurely snapping or fragments breaking off and causing a turbo blockage