EFIChip_Login_Reader.pdf

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EFIChip Login Reader

User Manual

Table of contents

1. Introduction

2. VAG immobilizer types and description

3. How to understand Immobilizer Indicator

4. How to read Login Code and learn the key

5. Troubleshooting

Introduction

From year 1995 in Audi-VW (VAG) cars is used engine immobilizer. The VAG group

immobilizer system consists of an immobilizer ECU which controls the recognition of keys

and the Engine Management ECU system. Immobilizer is activated when the ignition key

is removed and, together with the engine control unit, largely prevents unauthorized

starting of the engine. The system uses a transmitter and receiver unit in the ignition key

(transponder). Whenever an attempt is made to start the engine, it transmits a new code to

the car's electronics. The immobilizing is only cancelled and car motor electronic receives

permission to start engine if the key sends a right authorization code.

If the keys are lost or a replacement Engine Management ECU is fitted then the

transponder keys will need programming so that the ECU memories recognize the codes.

The Login Code required to program new keys for all VAG cars. This code is on the plastic

label and usually is connected together with car keys. If you lost or don't know car Login

Code you must contact dealer and order it - this can take up to 1 month. Or you can read it

with our tools.

Our EFIChip Login Reader can read this secret code from car and can simply adapt

additional on new key.

!!!Attention!!! READ THIS FIRST:

Key learning will erase all programmed keys from vehicle; make sure that you have

all car keys.

Wrong Login code can by entered only 3 times. Key learning with wrong Login

Code not erase original key and after this car will start with original key. If after 3

unsuccessful key learning attempts you will see "fault" on trip display, you must

wait 15 minutes with ignition "ON" to try again. In this "wait period" even good Login

Code will by ejected like incorrect.

VAG immobilizer types and description

VAG to year 2004 use 3 immobilizer types named IMMO1, IMMO2 and IMMO3.

IMMO1 is first immobilizer system used in Audi 100, A6, A4 to year 1997 and VW

Golf III, Passat B4, Seat older models. On this system Login Reader by diagnostic

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not work, but you can calculate immobilizer login code from immobilizer internal

EEPROM file. You must remove immobilizer box from the car (white box in Audi

and black box in VW), find inside internal EEPROM and read it with programmer.

Now with our Login Reader program you can calculate login code. Immobilizer

Emulator can by used to skip immobilizer function for these models.

IMMO2 immobilizer is integrated in vehicle instrument cluster. IMMO2 is used in

Audi A2, A3, A4, A6 and TT from 1997-2000 and VW Passat B5, Golf IV, Beatle to

year 2000, Seat and Skoda to year 2000. You can read login code by OBDII

diagnostic using our Login Reader. Immobilizer Emulator can by used to skip

immobilizer function for these models.

IMMO2 also is used in Audi A8, VW Sharan, Polo and Lupo, but on these cars

immobilizer is not integrated in dash, but have separated immo box. Login Reader

by diagnostic not work, you can calculate immobilizer login code from immobilizer

internal EEPROM file like on IMMO1 system.

IMMO3 is used in Audi, VW, Seat and Skoda models from year 2001. On most

cars Login Reader car read login by OBDII.

How to understand Immobilizer Indicator (on picture):

−

After ignition "ON", "yellow key light" go ON for 3 seconds and after go OFF: car

transponder key is accepted, you can start vehicle.

−

After ignition "ON", "yellow key light" start to flash: wrong car transponder key

inserted, you can't start vehicle. Need to learn this key to vehicle.

−

"Yellow key light" is ON: immobilizer is in programming state, good Login Code was

entered.

How to read Login Code and learn the key

−

Connect Login Reader to PC com1 or com2 serial port and start Login Reader

program.

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−

Connect Login Reader to car OBDII connector;

−

Insert any (working or new - not important) key and run ignition "ON". Don't start

vehicle;

−

Select car type and push "Read Login". After few seconds you will see immobilizer

version and Login Code. Not all cars and immobilizer software versions are

supported! If you will see "Unknown version" you can try to select another car and

read Login Code again. But on some cars is impossible read correct Login Code. If

you receive 2 or 3 different Login Codes, this mean, that only one of these codes is

correct, but you must select by yourself;

−

If Login Code reading was successful you can start "Key Adaptation";

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− Enter total number of keys to learn (including original and new keys - all original

keys will be erased first). Select or enter manually Login Code (PIN code). Push

"Start";

− If Login Code is correct immobilizer indicator (on picture) go ON for few seconds

and OFF after key is learned or start to flash if key is incorrect (wrong transponder

type or immobilizer can't detect car key).

− Wait to "Adaptation complete" and remove the key. Key is adapted. If you

programming 2 or 3 keys, insert next key and run ignition ON. Yellow immobilizer

indicator will illuminate for few seconds and go OFF. After last key learning

immobilizer indicator will flash twice.

− Learning is completed.

Troubleshooting

−

or immobilizer software version, check supported vehicle list on www.efichip.com

−

receive message "Incorrect Login Code". There is two possibilities:

1. Login code is really incorrect (new immobilizer software version), please send

version and exact car type and year, we will try to include this car in next

update.

2. Incorrect Login Code was entered more that 3 times, and now you must wait 15

minutes with ignition ON to try again. In this "wait period" even good Login

Code will by ejected like incorrect.

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−

Adaptation was completed, but immobilizer indicator flash. Wrong transponder

type or immobilizer can't detect car key. Check immobilizer system with any VAG

program. Login code reader have incorporated K-line diagnostic adapter and you

don't need additional interface for VW-Audi diagnostic. For diagnostic you can use

freeware VAG program ( download ).

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