Car On-board diagnostic system

How to Renew Mercedes NEC Key with CGDI MB and VVDI

Publié le 17/11/2017 à 07:29,
Mots clefs :

Mercedes NEC Chip Read/Write/Renew Manual:

What is a Mercedes NEC key?

How to tell if your Mercedes has an NEC key/chip:

How many types of Mercedes NEC key?

Which MB key programmer can be used for NEC key?

How to use CGDI MB for NEC key?

How to use VVDI Mercedes for NEC key?



Verified: CGDI Prog MB can read NEC chip from the original Mercedes-Benz key



What is a Mercedes NEC key?


  1. crystal
  2. RF front end decoder chip: this is a custom chip that takes the signal direct from the antenna and does IF filtering as well as decoding and then supplies a serial data output for the microcontroller
  3. NEC 8 bit microcontroller 78K0s series: this is the actual controller chip, actually a ‘secure’ version of the standard microcontroller. this holds the code that controls the code hopping algorithm as well as the individual ID codes for each transmitter.


How to tell if your Mercedes has an NEC key/chip:

Mercedes-Benz 1997-2000: 705 Moto

Mercedes-Benz 2001-2005: NEC

Mercedes-Benz 2006-2010: NEC

Mercedes-Benz 2011-: BGA

cgdi-mercedes-key-types (1)

How many types of Mercedes NEC key?

v51 v57

v28 v35 v40 v51 v57

v03 v06 v07 v08 v09 v61

v28 v35 v40 v51 v57

v03 v05 v06 v07 v08 v09 v59 v61


Which MB key programmer can be used for NEC key?

VVDI MB Tool: Confirmed!

CGDI PROG MB: Confirmed!

cgdi-prog-mb-key-programmer (1)

How to use CGDI MB for NEC key?


CGDI-MB read original NEC chip v40:

The original key & the NEC adapter


CGDI-MB-Read-NEC-Chip-2 (1)


CGDI-MB-Read-NEC-Chip-3 (1)

Choose Communication mode: NEC adapter

CGDI-MB-Read-NEC-Chip-4 (1)

Choose Chip Type: 000 4229

CGDI-MB-Read-NEC-Chip-5 (1)

Read Key/Chip

CGDI-MB-Read-NEC-Chip-6 (1)

CGDI MB Prog successfully read key data

CGDI-MB-Read-NEC-Chip-7 (1)

CGDI-Mercedes read/write original NEC chip v57:

cgdi-prog-nec-key-v57-1 cgdi-prog-nec-key-v57-2 (1) cgdi-prog-nec-key-v57-3 (1) cgdi-prog-nec-key-v57-4 (1)

Job’s done.

CGDI Mercedes works good.


How to use VVDI Mercedes for NEC key?


Put the NEC57 key chip on VVDI NEC Key Adapter


Put NEC Key Adapter on VVDI MB

Connect VVDI MB Tool with laptop and open latest VVDI MB software V2.1.7.

Now you can start to virgin Mercedes NEC57!

Select mode “NEC Adapter” then choose type “V51, V57”.


“Identification key”

VVDI MB will read NEC V57 key info successfully!

Key number is 1.

VVDI-MB-renew-nec-key-57-2 (1)

“Renew” to virgin NEC V57 key.

Wait a while key erasing complete 100% and success!

VVDI-MB-renew-nec-key-57-3 (1)Kess v2Ktagk-tagktag 6.070J-link

As you know, for crp3 we can do the trick for unlock crp3 heating on Ktag or Kess V2 programmer or buy a new NXP and write it (only one time)
Here are some questions & answers on Google form, questions about “how will you use J-ink if its crp3 ?”…

Q: Can I update NXP directly if at this moment I have Ktag 6.070? Or I will need to replace it with new one and then to update to 7.030 ?
A: if your actual fw is crp3 you will have to do “heating trick ” or change nxp, you will know if jlink doesn’t recognise firmware ( i think message about cannot find cpu chain or something like that) , simple

Q: More information this real version or china version? and whats this you can update or or only talk?? thanks
A: this is fw 7.030 we are talking about REAL firmware, not modding number in sw or similar, about second question i don’t understand what you ask.


Q: Need connect 12v ? my led red always off if not connect 12v

A: LED needs to monitor the state of the processor and it must be switched by the controller. If you do not have the power on the controller when connected by USB, then connect the other power source.


Q: How work on ktag, i tried but led already on

A: LED need to monitor the state of the processor and it must be switched by the controller. If you do not have the power on the controller when connected by USB, then connect the other power source.
To flash the LPC2478 via J-link, the level of protection should be CRP0, ie protection should be disabled. If security levels CRP1 and CRP2 have the ability to erase and reflash LPC2478 via UART, eg via USB to UART TTL adapter ftdi232 or cp2102 and Flashmagic program.


Q: LPC2478 connect Flash Magic, KESS or KTAG?

A: KESS V2 & KTAG…both ok

Note: not all ktag 5.001 can be read with j-link
some are crp3 protected
some are not


Attachment 1: Code Read Protection (CRP)

CRP explanation CRP status Volume label
The user flash can be read or written. No CRP CRP DISABLD
The user flash content cannot be read but can be updated. The flash memory sectors are updated depending on the new firmware image CRP1 CRP1 ENABLD
The user flash content cannot be read but can be updated. The entire user flash memory is erased before writing the new firmware image. CRP2 CRP2 ENABLD
The user flash content cannot be read or updated. The USB bootloader ignores the Entry Mechanism (P0.15 pin) and always executes the user application if present. If user application is not present then “Update” mode is entered. CRP3 CRP3 ENABLD


Attachment 2: Here are all pinouts

A method of disabling the protection CRP3 microcontroller LPC2478…. make a photo high resolution of connection on pcb of that wire…and also,what pin you must to touch on nxp



K-Tag pins.


Attachment 3: Photos ofLPC2478 connect Flash Magic

It allows you to erase the NXP MCUs on both Kess & KTag via UART0. This will work for firmwares up to CRP2. CRP0, best off using J-Link as it only takes 30s as opposed to 30 minutes. If you’ve blocked your KTag properly (CRP3), it won’t help you. You will need to swap the processor.


Kess V2 connection method 1:


Kess V2 connection method 2:


KTag connection:


Disclaimer: Photography of Pinouts is not mine. I am not responsible for a bad use.

Lonsdor K518 Key Programmer vs. OBDSATR X300 DP

Publié le 14/11/2017 à 07:42,
Mots clefs :

Obdstar X300 DP vs Lonsdor K518ISE: what’s the difference? which tool is better for auto key programming?


This is a chart of the two, compared in terms of hardware, operation and functionality.


Hardware specification comparison:

Item Obdstar X300 DP Lonsdor K518ISE
Image obdstar-x300-dp-full-1 lonsdor-k518ise-web
Operating system Android 5.1 Android 4.4
CPU Samsung Exynos4418 A9 industrial-grade processor ARM V7
Storage space FLASH 16G FLASH 8G
Battery 7400mAh 4550mAh
Resolution 1280*800 1024*600
Screen size 7 inch 7 inch
HDMI Available No
Communication USB/Bluetooth USB only
WIFI Yes Yes
Dimension 215*147*30  
Shell Three proofing and industrial-grade shell with rubber coating Civil-grade

Operation & service comparison:

Item Obdstar X300 DP Lonsdor K518
One key update Yes Yes
One key enter Yes No
Database Built-in repair database (domestic) No
Technical support Expert service team Professional service team

Function comparison:

There are differences between the Kess V2 5.017 red pcb boards. Both work good? Let’s see the two boards here and read reviews to find out the truth.
Kess V2 5.017 Version 1: Most of the boards look like this

KESS-V2-5.017-OLD-PCB-1 KESS-V2-5.017-OLD-PCB-2
Kess V2 v5.017 Version 2: board with different reworked parts:


1.the left upper corner and the lower right corner notch size is not the same

2.More than buzzer

3.WFs = Infineon, BCR112 NPN Digital Transistor

4.27E = ON Semiconductor NUP2105LT1G

5.6DW = NXP BC817,215 NPN Bipolar Transistor

6.A6c =MMUN2113LT1G / MMUN2113LT3G

7.K5B = BC807-25-7-F PNP Bipolar Transistor

8.Using imported Japanese Murata filter NFE61PT472C1H9L


Actually, version 1 is the old version; version 2 is the new one, updated and improved based on version 1. the new version works much more better than the old. Read how uses think of it and it talks the truth.


Review of Kess V2 5.017 with NEW red PCB:


Have make pictures from kess V2 eu China version with eu case.
works good and fast r/w over obd.


Kess V2

Chill mate.
The PCB looks great!!
Who cares about the case? Inside matters!
Pcb looks just like this!



PCB quality ok, not proper enclosure as advertised.kess-5017-red-pcb-revew-1 kess-5017-red-pcb-revew-3 kess-5017-red-pcb-revew-4 kess-5017-red-pcb-revew-5 kess-5017-red-pcb-revew-6 kess-5017-red-pcb-revew-7 kess-5017-red-pcb-revew-8



This is last one i received from China today looks pretty ok for 145$:

kess-v2-5017-red-1 kess-v2-5017-red-2 kess-v2-5017-red-3 kess-v2-5017-red-4 kess-v2-5017-red-5 kess-v2-5017-red-6 kess-v2-5017-red-7 kess-v2-5017-red-8

kess-v2-5017-red-1  kess-v2-5017-red-2 kess-v2-5017-red-3 kess-v2-5017-red-4 kess-v2-5017-red-5 kess-v2-5017-red-6 kess-v2-5017-red-7 Renault CAN ClipRenault ClipRenault CAN Clip V712

(11/06/2017) Renault CAN Clip v172 Multilingual diagnostic software download on Mega:!xdJymSTT!ynCiyBCxpGjFWVsdPdeWBg
Renault CAN Clip – the latest diagnostic tool for vehicles of Renault. It contains all the latest diagnostic technology and information base to address all requirements.
– O.S.: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10
– CPU: Intel/AMD 2 GHz or higher
– RAM: 1 GB of system memory
– Hard Drive: 5 GB of available space
– Optical Drive: DVD-ROM
(Because to use the other option, (renault net), you need to have the renault server/account for reprogramming)
– Required Hardware: Renault CAN Clip Diagnostic Interface
– Files included:
– Security: Unknown
Note: The software is not from me. I hold no responsibility of a bad use.
You can use the last version- Renault CAN CLiP 171 software with security.
CANCLIP V171 is tested by professionals and users many many times. You can use that with relief.
Now, obdii365 experts are testing Renault CLIP 172 for you all. The result will be reported here.
Note: when you try to update Renault CLIP software (for clone tool) and it asks you for device serial number, you can put numbers from 1 to 7… or all zeros…
Renault CAN CLiP update issues & solutions:

Issue: CAN CLIP firmware update at 20% (solutions)

Here are some customer solutions of Renault CAN CLIP firmware update stops at 20%, some solved by files rename and some by CLIP pcb reword.
Solution I: (said 100% working)
For those who have a Chinese Can clip that remain stuck at 20% on the update of the firmware here is the procedure to stop the worries and can again use the Clip device.
Must rename the following files:
C: \ CLIP \ DATA \ APPLI \ PARAMS \ appliiso.s19 in appliiso.bak
C: \ CLIP \ DATA \ APPLI \ PARAMS \ applican.s19 in applican.bak
tested by my self work 100%
Solution II:
if firmware update stops at 20% the solution is very easy
Exist some problems in hardware … ISO pcb or CAN pcb
For bypass that error search for 2 files APLIISO.S19 and APLIICAN.S19 and rename this files to .bak one time ISO …start the soft and ceck …. and one time CAN and restrt the soft and ceck…and you see where is the problem CAN hardware or ISO hardware….
The files is located here :
If you have renamed the right file no more firmware stop at 20% but the problem on hardware remain and is possible use the interface only for ISO or only for CAN vehicles…..or put the interface in trash !!!!
BUT, some say the exactly reasons for 20% update problem is not the software problem! It’s HARDWARE problem with your clone CLIP sonde. You probably have bad flash chip or bad soldering, or bad oscillator, or, … you name it, but anyway as I said it’s pure hardware problem. You can avoid firmware update for ISO or CAN board with renaming few files, but that is not solution because if you can’t update firmware, your CLIP will not work properly. 
Solution III:
Besides two pcb’s inside Clip (can and iso) there is small thrid pcb where is round connector for car cable . When this cable is plugged and unplugged to Clip very often ( which needs a little force ), then solderings on metal pins which links this small pcb with rest of clip are breaking with the time.
You just need to resolder connections of these pins.
I did it and it solve update 20% problem
Renault CAN CLiP reprogramming FAQs:
Q: Why to choose reprogramming through a cd-rom?
A: Because to use the other option, (renault net), you need to have the renault server/account…
Q: What is the purpose of renault can clip reprogramming?
A: This update installs an updated version of the ECU software, it can be released for example, if renault found a glitch in the previous versions, or to make slightly changes as the engine gets older etc…
Q: Do you know if you can reprogram a Renault ECU for more than 1 times???
A: With clip, if the software available is higher than the one installed, you can… You can’t install a lower/older version…

Q: What’s the Renault can clip programming mode serial

A: Renault clip on programming: It asked for a 7-digit serial (digits 0-9).
123456789 works good
all Zeros 0000000
1234567 works fine
Note: with Renault Can Clip china clone, you need luck to do ECU programming and key programming. But most have no luck to do this. You’ll get what you pay for. The Clone are much more cheaper than the Genuine. Usually, CANCLIP interface clone is good at basic OBD2 diagnostic tests and ECU reprogramming only.

Page précédente | Page 1 sur 17 | Page suivante
Item Obdstar X300 DP PAD Lonsdor K518 Key Programmer
OBDII diagnosis Yes, full-system diagnosis No
Odometer correction Yes Yes
Pin code Inquiry 7*24 hours automatic Inquiry is available for most pin code (domestic) No
Key programming Yes Yes, it has full vehicle coverage, incl. Renault, Volvo, etc.


(see details below)

EEPROM/PIC adapter Yes No
ABS Yes No
TPS Yes No
SRS reset Yes No
TPMS(low tire)reset Yes No
Steering angle reset Yes No
CVT learning/Value reset Yes No

Mes albums

Où suis-je actuellement ?


Mes amis

Sites favoris