I have a 2010 Jetta TDI Highline and the speedo is 8% fast. I tried changing the multiplier number. Tried every one except 0. All the others seem to be for specific vehicles, some European. What does the 0 do? Is there something I am not doing?
Speedometer Calibration
- Thread starter rotorhead23
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Hi, could provide us with an Auto-Scan of the vehicle so we can have some information about the installed controllers,
Thank you.
Thank you.
Code:
Thursday,13,March,2014,15:57:10:54235
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 12.12.2.0
Data version: 20140212
VIN: 3VWRL8AJXAM138645 License Plate: PSX005
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: AJ (1K0)
Scan: 01 03 08 09 15 16 17 19 1C 25 2E 42 44 46 52 56 62 72 77
VIN: 3VWRL8AJXAM138645
01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Sporadic communication error 1000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
1C-Position Sensing -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: Sporadic communication error 1000
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: Sporadic communication error 1000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: Sporadic communication error 1000
72-Door, Rear Right -- Status: Sporadic communication error 1000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CJA) Labels: 03L-906-022-CBE.clb
Part No SW: 03L 906 019 CL HW: 03L 906 022 TS
Component: R4 2,0L EDC 0000SG 7966
Revision: 12H03--- Serial number:
Coding: 0350072
Shop #: WSC 91579 999 100107
VCID: 77D3003F061E9FA6AAD-8022
1 Fault Found:
005784 - Please Check DTC Memory of Steering Wheel Electronics
P1698 - 000 - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 6
Fault Frequency: 5
Reset counter: 255
Mileage: 134237 km
Time Indication: 0
Date: 2042.14.15
Time: 12:48:59
Freeze Frame:
RPM: 0 /min
Speed: 0.0 km/h
Load: 0.0 %
Speed: 0.0 km/h
(no units): 255.0
(no units): 255.0
Bin. Bits: 01000000
Readiness: 0 0 0 0 1
-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels: 1K0-907-379-60EC1F.clb
Part No SW: 1K0 907 379 AH HW: 1K0 907 379 AH
Component: ESP MK60EC1 H30 0107
Revision: 00H30001
Coding: 114B400C49250002881102E8921E0042300000
Shop #: WSC 00066 000 00000
VCID: 78D10303CB0090DEA37-802D
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301) Labels: 3C8-907-336.clb
Part No SW: 3C8 907 336 AC HW: 3C8 907 336 AC
Component: Climatic H14 0305
Revision: 00009001
Coding: 0000000002
Shop #: WSC 00066 000 00147
ASAM Dataset: EV_Climatic A01005
ROD: EV_ClimaBasis_SE36.rod
VCID: 6EFD255BB144DE6E79B-803B
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels: 1K0-937-08x-09.clb
Part No SW: 5K0 937 084 C HW: 5K0 937 084 C
Component: BCM PQ35 B 011 0029
Revision: BG011001
Coding: 2D200B1E902F3EE4000800854000000401000086500085605C8020000000
Shop #: WSC 00066 000 00000
VCID: 3245F12B6DFCBA8E5D3-8067
Subsystem 1 - Part No: 1K1 955 119 F Labels: 1KX-955-119.CLB
Component: Wischer 20051 23 0512
Coding: 009795
2 Faults Found:
02394 - Parking Light Left Front (M1)
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 2
Fault Frequency: 1
Reset counter: 249
Mileage: 134242 km
Time Indication: 0
Date: 2042.14.15
Time: 17:31:11
Freeze Frame:
Term 15 On
Voltage: 14.15 V
ON
ON
OFF
OFF
OFF
03384 - Windshield Washer Jet Heating
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 4
Fault Frequency: 7
Reset counter: 254
Mileage: 134237 km
Time Indication: 0
Date: 2042.14.15
Time: 00:06:08
Freeze Frame:
Term 15 On
Voltage: 11.60 V
ON
ON
OFF
OFF
OFF
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 1K0-909-605.lbl
Part No SW: 1K0 909 605 AD HW: 1K0 909 605 AD
Component: 08 AIRBAG VW8R 036 8900
Revision: 06036000 Serial number: 003EVM02VZX%
Coding: 0012344
Shop #: WSC 00066 000 00000
VCID: 6EFD255B7944DE6E79B-803B
Subsystem 1 - Serial number: 6332MSME52710A578
Subsystem 2 - Serial number: 6342MSME52707809A
Subsystem 3 - Serial number: 6351HSME206E685FN
Subsystem 4 - Serial number: 6361HSME206E6E7AR
Subsystem 5 - Serial number: 63727SME21320841O
Subsystem 6 - Serial number: 63827SME21333347U
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 1K0-953-549-MY9.lbl
Part No SW: 1K0 953 549 CD HW: 1K0 953 549 CD
Component: J0527 056 0111
Coding: 0000731
Shop #: WSC 00066 000 00000
VCID: 76CD0D3B0114E6AEB1B-8023
Subsystem 1 - Part No: 5K0 959 542 Labels: 3C8-959-537.CLB
Component: E221__MFL-TAS H05 0010
Coding: 00000130
Shop #: WSC 00000
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels: 5K0-920-xxx-17.clb
Part No SW: 5M0 920 870 E HW: 5M0 920 870 E
Component: KOMBI H05 0305
Serial number: 00000000000000
Coding: 371F00
Shop #: WSC 00066 000 00147
ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04052
ROD: EV_Kombi_UDS_VDD_RM09_VW21.rod
VCID: 3147FE2760FA8196249-8064
1 Fault Found:
12604928 - Combination / Chassis CAN Bus (SAE Bus D)
U0056 00 [008] - Performance
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 236
Mileage: 133887 km
Date: 2042.14.03
Time: 12:55:57
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 1K0-907-530-V4.clb
Part No SW: 1K0 907 530 AD HW: 1K0 907 951
Component: J533 Gateway H07 0112
Revision: H07 01 Serial number: 300410F1000426
Coding: E9807F06001612001002
Shop #: WSC 00066 000 00000
VCID: 69F7564740AA39562C9-803C
5 Faults Found:
01331 - Door Control Module; Driver Side (J386)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00110100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 238
Mileage: 134015 km
Time Indication: 0
Date: 2042.14.10
Time: 00:00:06
01332 - Door Control Module; Passenger Side (J387)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00110100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 238
Mileage: 134015 km
Time Indication: 0
Date: 2042.14.10
Time: 00:00:06
01333 - Door Control Module; Rear Left (J388)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00110100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 238
Mileage: 134015 km
Time Indication: 0
Date: 2042.14.10
Time: 00:00:06
01334 - Door Control Module; Rear Right (J389)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00110100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 238
Mileage: 134015 km
Time Indication: 0
Date: 2042.14.10
Time: 00:00:06
01320 - Control Module for Climatronic (J255)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00110100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 238
Mileage: 134015 km
Time Indication: 0
Date: 2042.14.10
Time: 00:00:06
-------------------------------------------------------------------------------
Address 1C: Position Sensing Labels: 1Kx-919-xxx-1C.lbl
Part No SW: 1K5 919 965 D HW: 1K5 919 965 D
Component: Kompass 001 0001
Revision: 00001000 Serial number: 1293324R4X2706
Coding: 0000004
Shop #: WSC 00066 000 00000
VCID: 3C59DF137FB87CFE87F-8069
1 Fault Found:
01299 - Diagnostic Interface for Data Bus (J533)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 236
Time Indication: 0
-------------------------------------------------------------------------------
Address 25: Immobilizer (J334) Labels: 5K0-920-xxx-25.clb
Part No SW: 5K0 953 234 HW: 5K0 953 234
Component: IMMO H05 0305
Serial number:
Coding: 000000
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03005
ROD: EV_Immo_UDS_VDD_RM09_SE36.rod
VCID: EAF5A94B0DACB24EA53-80BF
No fault code found.
-------------------------------------------------------------------------------
Address 2E: Media Player 3 (J650) Labels: 5N0-035-342.lbl
Part No SW: 5N0 035 342 B HW: 5N0 035 342 B
Component: SG EXT.PLAYER H13 0090
Revision: A1001003 Serial number: 7667908992
Coding: 010000
Shop #: WSC 00066 000 00000
VCID: 266D1D7B5134D62EC1B-8073
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels: 3C0-959-70X-GEN4.clb
Part No SW: 3C0 959 701 B HW: 3C0 959 793
Component: TUER-SG FT 002 0307
Revision: 13101005 Serial number: 0000849589
Coding: 0004B5
Shop #: WSC 01383 790 50316
ASAM Dataset: EV_DCU42BroseDriveSide A03004
ROD: EV_DCU42BroseDriveSide.rod
VCID: 2773107F5E3ECF26FAD-8072
Slave Driver:
Subsystem 1 - Part No SW: 1K0 959 703 AH HW: 1K0 959 795 T Labels: 1K0-959-70X-GEN4.CLB
Component: J388__TSG-HL 006 1401
Serial number: 00000004824191
Coding: 000490
No fault code found.
-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-14x-44.clb
Part No: 1K0 909 144 J
Component: EPS_ZFLS Kl. 70 3001
Revision: 00H17000
Shop #: WSC 02069 000 90108
VCID: 3147FE27A8FA8196249-8064
1 Fault Found:
03803 - Steering Angle Sensor for Steering Aid
000 - - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Time Indication: 0
Freeze Frame:
Battery Volts: 12.4 V
PD
Temperature: 8.0°C
Count: 2
Steering Angle: 0.00°
Count: 0
SteerAng n.Init
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels: 3C0-959-70X-GEN4.clb
Part No SW: 3C0 959 702 B HW: 3C0 959 792
Component: TUER-SG BT 002 0307
Revision: 15101005 Serial number: 0000730005
Coding: 0004B4
Shop #: WSC 01383 790 50316
ASAM Dataset: EV_DCU52BrosePasseSide A03004
ROD: EV_DCU52BrosePasseSide.rod
VCID: 287113435320C05EF37-807D
Slave Passenger:
Subsystem 1 - Part No SW: 1K0 959 704 AH HW: 1K0 959 794 T Labels: 1K0-959-70X-GEN4.CLB
Component: J389__TSG-HR 006 1401
Serial number: 00000004809336
Coding: 000490
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio (J503) Labels: 5M0-035-1xx-56.clb
Part No SW: 1K0 035 180 AC HW: 1K0 035 180 AC
Component: Radio Prem-8 H10 0035
Revision: -----20S Serial number: VWZ4Z7K3077759
Coding: 2100040004
Shop #: WSC 00066 000 00000
VCID: 61E74E67789A7116F49-8034
No fault code found.
-------------------------------------------------------------------------------
Address 77: Telephone Labels: 5P0-862-335.lbl
Part No SW: 1Z0 035 729 E HW: 1Z0 035 729 E
Component: FSE_2P8x H40 0190
Revision: 00000000 Serial number: 00000005248271
Coding: 0013088
Shop #: WSC 00066 000 00000
VCID: 3A55D90B758C42CE953-806F
No fault code found.
End ---------------------------------------------------------------------
Last edited by a moderator:
All faults in above scan are fixed except windshield washer nozzle heaters.
Hi, thanks for posting the Auto-Scan...
It looks like the Distance Impulse Number number '0,3 and 8' are just not documented for any particular vehicle, where as the numbers '1, 2,4,5,6 and 7' are.
So if your cluster accepts the coding change you will not hurt anything by trying.
If your cluster does not accept any particular value, VCDS nor the factory scan tool can force it to do so.
The label file we use for that cluster also works for other clusters that maybe installed on different vehicle types, so coding changes will need to apply to those vehicles and these changes may not work on yours.
Hope this helps.. .
drpeter
It looks like the Distance Impulse Number number '0,3 and 8' are just not documented for any particular vehicle, where as the numbers '1, 2,4,5,6 and 7' are.
So if your cluster accepts the coding change you will not hurt anything by trying.
If your cluster does not accept any particular value, VCDS nor the factory scan tool can force it to do so.
The label file we use for that cluster also works for other clusters that maybe installed on different vehicle types, so coding changes will need to apply to those vehicles and these changes may not work on yours.
Hope this helps.. .
drpeter
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To understand how to do the calibration you have to understand how the values are being used/calculated. First off, a wheel/tire does a certain number of turns per kilometer. Depending on the wheel circumference (and therefor tire size/dimension) that number obviously differs. Check this thread in another forum... 
http://forums.tdiclub.com/showthread.php?t=316833
In your case, you should be able to determine which coding values corresponds with which distance impulse number by reading the "Velocity Detection - Distance Impulses" adaptation channel in the instrument cluster.
http://forums.tdiclub.com/showthread.php?t=316833
In your case, you should be able to determine which coding values corresponds with which distance impulse number by reading the "Velocity Detection - Distance Impulses" adaptation channel in the instrument cluster.
Thank you. I know how the impulse number works and understand how different wheel diameters affect the speedometer. I was surprised to see that most of the settings were for specific models. None of the settings did anything except make the speedometer read even faster. I will try the 0 setting to see if it will do anything. Looks like VW doesn't want us to have an accurate spedo. Being an ex helicopter pilot who has always needed accurate speed info kind of infuriates me. Let you know what the 0 does.
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IMO the best way to approach this is by starting a list of coding values vs. actual distance impulse numbers (see the mentioned adaptation channel), this should give you a quicker overview about what is and isn't available resulting in an informed decision instead of blind trial and error. The fact that we currently have associated specific models with each of the coding values is merely a suggestion to our customers because different models simply come with different wheel sizes.
That is exactly how far mine is off on my 2013 Jetta Comfortline. 100 kph on the GPS is 108 kph on my analog speedometer and 106 kph on my digital display.
I just came back from trying all of them from 0 to 8. The 0 came back with a "Coding Rejected".
Some screen shots I took. By the way, Distance Impulse Number 7 is how my car came.
GPS readings were done with the cruise control set and on a level and straight section of highway.
Nr. - Analog - Digital
1 - 116 - 113
2 - 113 - 112
3 - 111 - 110
4 - 110 - 109
5 - 109 - 107
6 - 108 - 106
7 - 108 - 106
8 - 106 - 104
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There's two separate things to keep track of: how fast does the car think it's going, and what shows up on the analog speedometer needle. There's definitely a small, positive error designed into the analog needle display. This is present on all VWs. Any given measurement instrument will have an error band of non-zero width, and it's important this particular one never reads low for obvious legal reasons, so they deliberately design for it to err just a touch on the high side.
Underlying that, the car still should have a pretty good idea of how fast it's going. It's been a very long time since I tried this, but I seem to recall both of my cars being pretty close to dead-on as compared to GPS. I tested in a way very similar to yours. I set the cruise at a nice round speed, and then noted the position of the analog needle as compared to my trip-meter average speed display, which I reset after setting the cruise. The average speed display should show exactly how fast the car thinks it's going without the analog needle error. Alternatively, you could log speed from the instrument cluster with VCDS.
You seem to have a decent amount of error in the vehicle measured speed, and of course the analog needle error is cumulative with that. Given that your car seems to be coded properly, that doesn't seem like a problem. If you had electrical sensor trouble, the car would have noticed problems reconciling the transmission output speed with the four wheels' measured speeds from ABS and flagged it. You should probably be focusing on your wheels and tires.
The speedo will have been correctly calibrated as it left the factory: with the OEM wheels, with the OEM tires, and with OEM spec inflation. Any change here can affect accuracy. Not all tires and wheels of the same theoretical spec are exactly alike. Worn out tires will roll faster than new tires. Poorly inflated tires (temperatures are dropping!) will roll faster than properly inflated tires. Etc etc, and all sources of error are cumulative. It's not difficult to make a substantial difference. Spotting such differences is actually how indirect TPMS systems work. Some cars (I've personally witnessed this on a couple of Korean cars) are so picky they start having a bunch of false traction control and ABS engagements if you have a new tire and a worn tire on the same axle.
Jason
Last edited:
Correct.
On My Octavia 2 I checked the actual speed of the car through hidden menu of Climatronic (https://www.youtube.com/watch?v=gIEEUNmR7J8&list=PLfbZtq6EMuERkgT6wnVEiyH_QYp8bLAGQ&index=17 , channel 19, subchannel 0 (for km/h) or subchannel 1 (for Mph)) and the difference to GPS was only 1 km/h at 100 km/h, while the speedo was showing 106 km/h. So the car actually knows the actual speed, but it shows higher speed as Jason already described.
Also this is very correct:
Anyway, I don't have any experience with Jetta, but you should be able to get into hidden menu and then check for the actual speed. Maybe this will work (I suppose that your Jetta is based on Golf MK6, if it is still MK5, first video should work for you): https://www.youtube.com/watch?v=0JrYIvIljwo
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Take a VCDS, go to EGINE Measue Block ,and find a field with a Vechicle speed and compare this with your speedo.
Did DIGITAl speed and "needle speed" is this same ?
Also you can look in Cluster - Advanced Meas Block to check real wheel diameter.
WHo said that GPS speed is right ?
if you really want check car speed you should use tacho directly connect to the drive shaft
Did DIGITAl speed and "needle speed" is this same ?
Also you can look in Cluster - Advanced Meas Block to check real wheel diameter.
WHo said that GPS speed is right ?
if you really want check car speed you should use tacho directly connect to the drive shaft
Jason, I come from a calibration world having run a standards lab and 8% is huge!!!
Plus that 8% was the same when the car was a month old.
Plus that same number is reported by other owners with the same model and series of car.
Trust me, far more accurate than a speedo.
And then that system would need to be calibrated. People, reading a display, even a digital display, means nothing unless the system is calibrated.
Of course, you can check actual speed also through VCDS, I forgot to mention this, because I always check it through Climatronic, since it is much safer than driving with laptop on your knees. If you have another person than it is a different story.
If you are driving on a a road without any descent/ascent and in straight line than I would say this is as correct as you can have it without any expensive measurement equipment.
Just for example: we have traffic signs that measure and show your speed and in 90% there is no difference to GPS speed and the rest the difference is 1km/h.
There are only two speeds; "indicated" and "true" which we would hope are the same. But in many cases they are not. That is where calibration comes in, either in an adjustment or a calibration table.
The VCDS can only report a speed based on the math within the module that handles the speed display. This will be determined by the tire rotation versus distance, the number of pulses (ABS wheel sensor or drive shaft sensor) and the math (including time) that then converts to a digital display of MPH or KPH.
Ideally, I wish VW AG would just give me a window in the program where I enter a number so as to get the correct speed displayed.
Let us assume the ABS sensor ring has 72 teeth and that at 100 KPH, the wheel rotates 500 times per kilometer. That would be 36,000 pulses in 1 kilometer or in 36 seconds. Or 1000 pulses per second if the circuit is designed to update at that rate.
All I would need to do is divide by 10 to get 100 KPH.
Let us assume the ABS sensor ring has 72 teeth and that at 100 KPH, the wheel rotates 500 times per kilometer. That would be 36,000 pulses in 1 kilometer or in 36 seconds. Or 1000 pulses per second if the circuit is designed to update at that rate.
All I would need to do is divide by 10 to get 100 KPH.
That would be perfect, but I guess there would be some legal consequences to that.
This is also why speedos of all cars usually show cca. 5% more than the actual speed.
This is also why speedos of all cars usually show cca. 5% more than the actual speed.
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This should help you...
http://forums.tdiclub.com/showthread.php?p=3047646#post3047646
BTW: Don't calculate based on the analog gauges, if in doubt use the digital display as reference. The analog gauges are often enough not ideally calibrated (the motors that run them actually), so there may be some added inaccuracy. Also note that there are models which use secondary distance impulse number to calculate the distance travelled, so that may be off as well (meaning there may not be just 2 speeds you're looking at but 3)! In other words, double check not just the analog gauges but also the digital ones (and/or if not available the measuring values) as well as the displayed distance travelled. Test institutions use an external wheel with a defined circumference and calibrated speed sensors. They don't use any of the vehicle's own system, nor do they use GPS - yet for our use the GPS should be good enough.
http://forums.tdiclub.com/showthread.php?p=3047646#post3047646
BTW: Don't calculate based on the analog gauges, if in doubt use the digital display as reference. The analog gauges are often enough not ideally calibrated (the motors that run them actually), so there may be some added inaccuracy. Also note that there are models which use secondary distance impulse number to calculate the distance travelled, so that may be off as well (meaning there may not be just 2 speeds you're looking at but 3)! In other words, double check not just the analog gauges but also the digital ones (and/or if not available the measuring values) as well as the displayed distance travelled. Test institutions use an external wheel with a defined circumference and calibrated speed sensors. They don't use any of the vehicle's own system, nor do they use GPS - yet for our use the GPS should be good enough.
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Well its maybe a little off-topic, but i think many Test institutions use these Racelogic units.
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