Rolls-Royce Dawn 2019 Smart Key

BMW Smart Key (FEM)

USA

Overview

Key Type

Smart Key

Markets

USA

Transponder

ID49 (PCF7953P / HITAG PRO)

Integrated

Frequency

315 MHz

Battery

CR2032

Transponder Cloning

Skill Level

Skilled

Universal Keys

Autel 315MHz

Test passed

Xhorse 315MHz

Not tested

KYDZ 315/433/868MHz

Test passed

Original Keys

315MHz - HUF5662, HUF5766

Overview

Add key

Eeprom/Bench

All keys lost

Eeprom/Bench

System

FEM

Prepare dealer key

Yes

Remote programming

Automatic

All keys erased automatically

Power supply

Recommended (if under 11.5V)

Additional cables required

Number of key slots

Key Programming via OBD

General Instructions

Before removing the FEM on the bench - connect via OBD and make sure that the unit is not unlocked already by other locksmith, if so, perform key learning directly.
If all keys are lost, you have to read the ISN number from the DME.

Key Programming via EEPROM

Unit - FEM

Original transponder: PCF7953
Allowed transponder: PCF7953, PCF7939

Data location: Eeprom ST 95128

Reading: in circuit with clip recommended

Adapters: APA-103; VVDI Eeprom Clip etc.

No. of keys: 10

Unit location

It is located in the pillar near the front passenger’s right foot.

FEM Unit

In the photo of the unit, you can see that it is FEM, along with its SW/HW and OEM part number. You need those numbers if you need to replace the module.

FEM&BDC pcb difference

Tips. FEM and BDC are often shown as one menu in programmers, but they are different modules with different procedures. FEM is usually done on the bench (if not unlocked before by other locksmith), while most BDC1 versions can be done fully via OBD2.

Unit removal

Video instruction.

Eeprom reading

Since the EEPROM chip is covered with lacquer, it is quite difficult to desolder. Because of this, the EEPROM or PCB tracks are often damaged during the process, especially by beginners. After such damage, communication with the module is often lost or the relay may start clicking continuously. Therefore, we recommend using solder-free clips such as the Autel APA-103 or similar tools from other manufacturers. TIP: Before reading, run a soldering iron across all EEPROM pins to remove the lacquer and ensure good contact for the clip.

Test platform

FEM/BDC test platform is used for faster key programming on the bench.