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How to repair Volkswagen ECU BOSCH MED17.5 Motronic for 2.0T Engine

VAG MED17.5 ECU repair solution repair guideline repair kit

How to repair Volkswagen ECU MED17.5 Motronic for 2.0T Engine

Per many friend request, Here I made the Volkswagen 2.0 T Engine BOSCH MED17.5 Motronic ECU repair guideline IC chip function illustration, it’s may help some friend to repair this ECU.

In many Case the ECU can be repair by change of the IC chips, hopefully it will make sense.

Gifts of rose, hand there are lingering fragrance.

If you like it, please share to more people who are in need. for more repair guidelines tutorials please register members on my store, I will share with the members via Emails, 


VAG MED17.5 ECU repair solution repair guideline repair kit

Volkswagen Passat ECU MED17.5 repair solution repair guideline

Volkswagen ECU MED17.5 repair kit repair method repair guide book

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AUDI A6 Q5 ESL/ ELV Module J518 repair solution & repair kits

AUDI A6 Q5 ESL/ ELV Module J518 repair solution & repair kits

AUDI steer column Module – J518 is easy been damaged, it’s a common problem, when the J518 Module is failure, the following problems will occurred when insert the key:

  1. Steer column will not be unlocked;
  2. Car will not start;
  3. Dashboard can not be light up.

But the key can rotate normally.

AUDI J518 Modules

AUDI J518 repair kit

Repair solutions:

  1. dismantle the J518 Module form the car, open it, use XPROG read the MCU, there are three kind of MCU Model exist:


MC9S12DG128CFUE 1L59W;

MC9S12DG128CFU 3L40K;

MCU for AUDI J518 Module

Read both the flash and eeprom dump from the MCU and saved on desktop, the XPROG wiring diagram:


  1. Buy new MCU from, as the MCU is new and blank, use the XPROG write the dump been saved in the first step in to the new MCU, then solder back on the J518 circuit board.
  2. Change the Relays Model No: ACT512;ACT512 20A 12V AUDI A6 Q5 J518 commonly used relays
  3. Better change the micro switch and the ELV motor as well.Micro switch for AUDI A6 Q5 J518 Audi J518 ELV motor
  4. If the J518 circuit board is burned or badly damaged, or don’t want to do time -comsuming soldering work, better change a new blank circuit board.

AUDI A6 J518 ESL ELV control unit inner board blank J518 Module

Attention: When change the MCU, Desoldering the MCU, please mind the small resistors beside the MCU, The hot air gun may damaged the resistor, please be carful.

if the MCU is totally damaged and can not read the dump out, ask some one to share a dump, after write into the new MCU or new blank circuit board, use device to do adapting work.

Thanks for reading! If you like it please share to more people in need.


Steve Powell


Skype: live:u-obd

WhatsApp/ Viber/ BBM/ Telegram: +8617154835574.


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SUBARU Forester Smart key adapting method for all key lost

SUBARU Forester Smart key adapting method for all key lost


We all knows SUBARU spare parts is very expensive, all key lost will cost a lot, here we share the SUBARU Forester key
adapting method for all key lost.
SUBARU Smart key all key lost key adaption have two common methods:
1. Disassemble the SMT Main ECU, Use AD900 programmer to write data into Toyota smart key, it can directly start the car, No need adapting on the car again, but must use AD smart key.
2. Disassemble the SMT Main ECU, immobilizer(ESL/ELV), Write initialization data, then study the key on the car.
Here we share the second method, SUBARU Forester use 5290 smart key, Year 2013, No immobilizer, disassemble the SMT Main ECU and ELV Write initialization data and study the key.


1.  Get the ELV(below steer column), disassemble the ELV module, find the 8 PIN EEPROM on the circuit board, Model No. : 93c46.
Desoldering the 93c46, use programmer and adapter read the data, make a backup first then change the code shown as below picture.
-keep the Red marked code code the same, others all change to F, When dump revised, use programmer and adapter write back to 93c46 eeprom, and solder back to the circuit board.
2. Disassemble the SMT Smart ECU(back side of the A column of the car), it’s appearance is the same as Toyota except the LOGO, disassemble the shell find the 8 PIN eeprom near the CPU, EEPROM Model No. : 93C86.  Disassemble the 93c86, Write initialization data, assemble back to the car, if without error the dashboard could be light up.

3. Use Key programmer add new keys directly.  Use K518, X300, or I80 key programmer, connect the car OBD interface, select SUBARU, then XV smart system, direct add new key, all down, after the keys added, no need sync, directly start the car.
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Volkswagen 35xx instrument immo key adapting tutorials all key lost

Volkswagen 35xx instrument immo key adapting tutorials all key lost

Volkswagen 35xx instruments cluster immo(New Jetta, New Santana, Skoda, volkswagen family the fourth generation immo manufactured after year 2013 ) all key lost adapting is an acknowledged head burn problems, many people try and then failed, here I got a new method to solve this tough problem, adapting new cars for volkswagen NEC 35xx instrument cluster all key lost.

Volkswagen 35xx

Abstract: because the volkswagen encrypt the 35xx instrument, result in the impossible to get the immo code from the eeprom without a key, when all key lost we can not adapting new key in term of the common methods. but we can get a alternative instrument cluster unencrypted sorts such as 24c32, 24c64(smart sort), via online adaption, let the volkswagen server write the original 35xx instrument cluster data into the alternative instrument cluster 24c32 or 24c64,  Ok, when this steps is down, we can use common methods to adapting 24c32 or 24c64 all key lost, because the alternative instrument cluster unencrypted, we can treat it as common all key lost case, when adapting work of 24c32 or 24c64 instrument cluster is down, we shifting back the 35xx instrument, all is down.
Devices & software needed: 35xx test cables, VCDS, VVDI2 Or K518, CN900, ODIS;
Volkswagen 35xx


1. Use VCDS select the 25th column – immobilizer, advanced identification,  read the 35xx instrument keys ID, record the ID (take picture or write down on a paper)
Volkswagen 35xx
2. Change the instrument cluster 24c32 or 24c64, use the ODIS software online adapting.  Select 25th column – immobilizer, adapting immobilizer, stoped before adapting keys, ESC.
Volkswagen 35xx
3. Common methods adapting new keys for 24c32 or 24c64 instruments all key lost, manually input the keys ID we record on the first step.  Use VVDI2 and 35xx testing cables to adapting 24c32 or 24c64 instrument keys on bench, there will be 6 steps, 1 to 5 steps, we follow it’s notification.
Volkswagen 35xx
4. The sixth step: VVDI2 click read immobilizer data, then the interface will display VIN, CS code, PIN code etc, all the key position is FFFFFFFF, Blank. input the keys ID manually into the first and second key position. then click write immobilizer data, the two original car key ID already been write into the eeprom.
Volkswagen 35xx
Volkswagen 35xx
5. Click generate the distributor keys:  select the car brands and models, then select the OEM keys, select generate key1 or key2, then click generate distributor keys, down.
Volkswagen 35xx
Volkswagen 35xx
Volkswagen 35xx
6. change back the original 35xx instrument cluster directly, the two keys no need study, cause their ID is the same as ID in the 35xx instrument,  no need study keys the car can start with the two keys.
Volkswagen 35xx
Volkswagen 35xx
Note: for fear the ABS code lost, better get the ECU and instrument adapting on bench, recommend buy the dedicated 35xx test cables, no need adapting on the car, decrease the risk of code lost.
Need 24c32 or 24c64 instrument cluster, please contact:
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Locksmith – Mercedes-Benz Car Model and It’s related Chassis No

Locksmith tutorials – Mercedes-Benz Car Model and It’s related Chassis No

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Many Automotive Locksmith didn’t know the relationship between the Car Model and the chassis No when they made keys. Here I’ll brief introduce their correspondence.

A series chassis No:

W168;  W169B; W245.

C series chassis No:

W201(Year 1982);  W202(Year 1994);  W203(Year 2001);  W204(Year 2007).

CL series chassis No:

W126;  W140;  W215;  C216.

CLK series chassis No:

W208;  W209.

CLS series chassis No:


E series chassis No:

W100(Year 1968);  W114, W115(Year 1968);  W123(Year 1976);  W124(Year 1985); W210(Year 1995); W211, W212(Year 2002).

G series chassis No:

W460;  W461;  W463.

GL series chassis No:


ML series chassis No:

W163;  W164R;  W251.

S series chassis No:

W116(Year 1971);  W126(Year 1979);  W140(Year 1991);  W220(Year 1998);  W221, W222(Year 2005);  W240(Maybach)

More related info please follow, or contact