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J518 Module Virgin Board for Audi A6L Q7 Start / Stop Authorization Steering Lock Repair

Audi J518 ECU Board for A6L Q7 Steering Lock J518 Module Repair.
Compatible with OE # : 4F0 905 852 B/D and 4F0 907 852 B/D/F.
MC9S12DG128CUF and MC9S12DG256CUF for choose
Vehicles covered: Audi 2005-2011 A6/S6 and 2007-2015 Q7 model vehicles.
  • Model:
    with 1L59W or 3L40K CPU Chip
    with 0L01Y CPU Chip
(19 available)
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Audi J518 Module Main PCB Board

Compatible with OE # : 4F0 905 852 B/D and 4F0 907 852 B/D/F. 

MC9S12DG128CUF (128 bit 1L59W and 3L40K CPU chip) and MC9S12DG256CUF (256 bit 0L01Y CPU chip) for choose
Vehicles covered: Audi 2005-2011 A6/S6 and 2007-2015 Q7 model vehicles.

1pc J518 main board 

For this J518 ESL below:

What is Audi J518 Module

Audi Access Start Authorization J518 Module / Steering Lock, integrating the immobilizer system brain and steering wheel lock mechanism.  The J518 module is a part of vehicle's steering column.  The Access Start Authorization Module (along with the Electronic Ignition Switch) is responsible for key/transponder recognition, unlocking/locking of steering wheel and powering up all modules in the vehicle.

Audi A6L / Q7 steering lock module J518 fault result below troubles:

1. When use key to start you car,it is OK to switch,but the dashboard light off and can not unlock the steering lock,engine will not start.
2. Use VAG diagnostic tools to read trouble code,sometime after clear the trouble code,you can use key to start engine again,but sometime can’t.

Why buy J518 Module with Us

J518 Module failure is a common a issue in Audi 2005-2011 A6/S6 and 2007-2015 Q7model vehicles.  Failure often results is no response from key in the ignition, or proximity access (Start button).
If there is an issue with any of the lock module components (actuator motor, sensing micro switches, relay) or the integrated Immobilizer system Microprocessor/PCB, the module will not provide power to Terminal 15 (ignition on).  
By dealer standard, the module itself isn't a serviceable item and can't be purchased separately, which means that the dealer will want to replace the entire steering column along with the Access Start Authorization Module. The dealer MSRP to replace the steering column along with the Access Start Authorization module is roughly $1500-1700 for parts (depending on manual or electric height adj) and ~$500 labor, including the need for Immobilizer coding with Audi Germany online master server access. 

There are main reasons result in Steering Lock Module J518 trouble:

1. Interior CPU fault
2. Interior relay fault
3. The micro switch damaged
4. Steering wheel lock motor damaged

Here comes the corresponding solutions.

1.CPU Damage
The most effective way to solve CPU Damage is replacement.You can buy new one to replace old. But you should pay attention to the data in old CPU.Before replacement,you need to use programmer (R270, XPRO-M, VVDI PRO...) to read and save the data in old CPU,include flash data and eeprom data.Different programmer have different wire connection style.


CPU Model Num: Begin with MC9S12 and end in(0L01Y/1L59W/3L40K)
Then welding it back on J518,and write the old CPU data in the new CPU.After,assemble it back to car,it ok! No need match the key!
Note:You should have a skillful welding.

2. Relay, Switch, Motor fault:  Relay, micro switch, motor fault are easier than the CPU fault.Just replace with new units. 

In conclusion, We advise you to buy J518 PCB Board, that will be more faster and safer and will save you much time.
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