Hyundai Santa Fe (2006 year). Manual - part 193

IMMOBILIZER CONTROL SYSTEM

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IMMOBILIZER CONTROL
SYSTEM

DESCRIPTION

EB551D42

The immobilizer system will disable the vehicle unless the
proper ignition key is used, in addition to the currently avail-
able anti-theft systems such as car alarms, the immobilizer
system aims to drastically reduce the rate of auto theft.

SMARTRA type immobilizer
-

The SMARTRA system consists of a transpon-
der located in the ignition key, an antenna coil,
a SMARTRA unit, an indicator light and the
PCM(ECM).

The SMARTRA communicates to the PCM(ECM)
(Engine Control Module) via a dedicated com-
munications line. Since the vehicle engine man-
agement system is able to control engine mobi-
lization, it is the most suitable unit to control the
SMARTRA.

When the key is inserted in the ignition and
turned to the ON position, the antenna coil
sends power to the transponder in the ignition
key.

The transponder then sends a coded

signal back through the SMARTRA unit to the
PCM(ECM).

If the proper key has been used, the PCM(ECM)
will energize the fuel supply system. The immo-
bilizer indicator light in the cluster will simultane-
ously come on for more than five seconds, in-
dicating that the SMARTRA unit has recognized
the code sent by the transponder.

If the wrong key has been used and the code was
not received or recognized by the PCM(ECM) the
indicator light will continue blinking for about five
seconds until the ignition switch is turned OFF.

If it is necessary to rewrite the PCM(ECM) to
learn a new key, the dealer needs the cus-
tomer’s vehicle, all its keys and the Hi-scan (pro)
equipped with an immobilizer program card. Any
key that is not learned during rewriting will no
longer start the engine.

The immobilizer system can store up to four key
codes.

If the customer has lost his key, and cannot start
the engine, contact HMC motor service station.

Antenna coil unit

Ignition key
(Has built-in transponder)

Key cylinder

SMARTRA
UNIT

PCM(ECM)
(FUEL SUPPLY
SYSTEM)

ETBF740B

COMPONENTS OPERATIONS

EA703DCB

PCM (POWER TRAIN CONTROL MODULE)

The PCM(ECM) carries out a check of the ignition
key using a special encryption algorithm, which is
programmed into the transponder as well as the
PCM(ECM) simultaneously. Only if the results are
equal, the engine can be started. The data of all
transponders, which are valid for the vehicle, are
stored in the PCM(ECM).

SCMBE6544D

BE -234

BODY ELECTRICAL SYSTEM

SMARTRA UNIT (B)

The SMARTRA carries out communication with the built-in
transponder in the ignition key. This wireless communica-
tion runs on RF (Radio frequency of 125 kHz). The SMAR-
TRA is mounted behind of the crush pad under panel close
to the antenna coil for RF transmission and receiving.
The RF signal from the transponder, received by the an-
tenna coil, is converted into messages for serial commu-
nication by the SMARTRA device. And, the received mes-
sages from the PCM(ECM) are converted into an RF sig-
nal, which is transmitted to the transponder by the an-
tenna.
The SMARTRA does not carry out the validity check of
the transponder or the calculation of encryption algorithm.
This device is only an advanced interface, which converts
the RF data flow of the transponder into serial communi-
cation to the PCM(ECM) and vice versa.

SCMBE6542L

TRANSPONDER (BUILT-IN KEYS)

The transponder has an advanced encryption algorithm.
During the key teaching procedure, the transponder will
be programmed with vehicle specific data. The vehicle
specific data are written into the transponder memory. The
write procedure is once only; therefore, the contents of the
transponder can never be modified or changed.

SCMBE6540D

ANTENNA COIL

The antenna coil (A) has the following functions.
-

The antenna coil supplies energy to the transponder.

The antenna coil receives signal from the transpon-
der.

The antenna coil sends transponder signal to the
SMARTRA.
It is located directly in front of the steering handle lock.

SCMBE6541D

IMMOBILIZER CONTROL SYSTEM

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TEACHING PROCEDURES

EEDEFC04

Key Teaching Procedure
Key teaching must be done after replacing a defective
PCM(ECM) or when providing additional keys to the
vehicle owner.

The procedure starts with an PCM(ECM) request
for vehicle specific data (PIN code: 6digits) from the
tester.

The "virgin" PCM(ECM) stores the vehicle

specific data and the key teaching can be started.
The "learnt" PCM(ECM) compares the vehicle spe-
cific data from the tester with the stored data. If the
data are correct, the teaching can proceed.

If incorrect vehicle specific data have been sent to
the PCM(ECM) three times, the PCM(ECM) will reject
the request of key teaching for one hour. This time
cannot be reduced by disconnecting the battery or any
other manipulation. After reconnecting the battery,
the timer starts again for one hour.

The key teaching is done by ignition on with the key
and additional tester commands.

The PCM(ECM)

stores the relevant data in the EEPROM and in
the transponder.

Then the PCM(ECM) runs the

authentication required for confirmation of the teach-
ing process.

The successful programming is then

confirmed by a message to the tester.

If the key is already known to the PCM(ECM) from a
previous teaching, the authentication will be accepted
and the EEPROM data are updated.

There is no

changed transponder content (this is impossible for
a learnt transponder).

The attempt to repeatedly teach a key, which has
been taught already during the same teaching cycle,
is recognized by the PCM(ECM). This rejects the key
and a message is sent to the tester.

The PCM(ECM) rejects invalid keys, which are pre-
sented for teaching. A message is sent to the tester.
The key can be invalid due to faults in the transponder
or other reasons, which result from unsuccessful pro-
gramming of data. If the PCM(ECM) detects different
authenticators of a transponder and an PCM(ECM),
the key is considered to be invalid.

The maximum number of taught keys is 4

If an error occurs during the Immobilizer Service
Menu, the PCM(ECM) status remains unchanged
and a specific fault code is stored.

If the PCM(ECM) status and the key status do not
match for teaching of keys, the tester procedure will

be stopped and a specific fault code will be stored at
PCM(ECM).

Connect the Scan-tool

Insert new 1st key and turn IG. ON

Input PIN code(6 digits)

(Remain minimun 3 seconds after input)

Insert new 3rd key and turn IG. ON

(Remain minimun 3 seconds)

Remove 1st key

Remove 2nd key

Insert new 4th key and turn IG. ON

(Remain minimun 3 seconds)

Remove 3rd key

Enter the key teaching mode

1st key is registered

2nd key is registered

3rd key is registered

4th key is registered

Remove 4th key

Sequence completed

Insert new 2nd key and turn IG. ON

(Remain minimun 3 seconds)

ETBF740M

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BODY ELECTRICAL SYSTEM

PCM(ECM) learnt status.

1. HYUNDAI VEHICLE DIAGNOSIS

MODEL : SANTAFE

01. ENGINE

02. AUTOMATIC TRANSAXLE

03. ANTI-LOCK BRAKE SYSTEM

04. SRS-AIRBAG

05. ELEC. CONTROL SUSPENSION

06. IMMOBILIZER

07. ELEC. POWER STEERING

08. FULL AUTO AIR/CON.

SCMBE6551L

1. HYUNDAI VEHICLE DIAGNOSIS

MODEL : SANTAFE

SYSTEM : IMMOBILIZER

01. CURRENT DATA

02. PASSWORD TEACHING/CHANGING

03. TEACHING

04. NEUTRAL MODE

05. LIMP HOME MODE

SCMBE6552L

1.3 TEACHING

INPUT PIN OF SIX

FIGURE AND PRESS [ENTER] KEY

CODE : 234567

MODEL : GRANDEUR
SYSTEM : IMMOBILIZER
STATUS : LEARNT

SCMBE6553L

1.3 TEACHING

1st KEY TEACHING

ARE YOU SURE ? [Y/N]

CODE : 234567

MODEL : SANTAFE
SYSTEM : IMMOBILIZER
STATUS : LEARNT

SCMBE6554L

1.3 TEACHING

1st KEY TEACHING

COMPLETED

CODE : 234567

MODEL : SANTAFE
SYSTEM : IMMOBILIZER
STATUS : LEARNT

SCMBE6555L

1.3 TEACHING

2st KEY TEACHING

ARE YOU SURE ? [Y/N]

CODE : 234567

MODEL : SANTAFE
SYSTEM : IMMOBILIZER
STATUS : LEARNT

SCMBE6556L

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