E-series key

Slot Key (BMW E-Series – CAS3)

Original BMW slot key for CAS3 system. Insert key into slot to start vehicle. Reliable system with fast programming.

Key type:
Slot key (key-in-slot start)

Markets:
EU / ASIA / SA / MEA / AUO

System:
CAS3 immobilizer

Transponder:
ID46 (PCF7945A / HITAG2, integrated)

Frequency:
433 MHz / 868 MHz

Battery:
VL2020 (rechargeable, soldered)
CR2032 (aftermarket versions)

Transponder cloning:
Supported

Skill level:
Professional

Key profile:
HU92R

Code series:
1 – 8100 (cuts: 8-8, Card: 1096, ISN: 5912)
HA00000001 – HA00008100 (Card: 1096, ISN: 7506)
HA00000010 – HA00081009 (Card: 1096, ISN: 7507)

Module location:
Driver side footwell (left side, CAS module area)

Programming overview:
Add key → OBD
All keys lost → EEPROM / bench

Key slots:
Up to 10 keys (max 2 active at same time)

Remote programming:
Automatic after key learning

Key erasing:
Not automatic (manual management)

Power supply:
Stable voltage mandatory

Additional cables:
Not required (OBD)

OBD notes:
CAS3 keys programmed directly via OBD
No CAS removal required in most cases
CAS3+ may require different procedure
AKL possible via OBD (CAS3 / CAS3+)

EEPROM / Bench details:
Original transponder: PCF7942 / PCF7945
Allowed transponder: PCF7936 / PCF7942 / PCF7945

Data location: MC9S12XEP100 / MC9S12DG256
Heating temperature: ~350°C

Immo location:
CAS module (driver footwell)

Remote function sync:
Insert key → ignition ON → OFF
Remove key → hold unlock + press lock 3x
Release and repeat if needed

Key construction:
Original key sealed (glued housing)
VL2020 rechargeable battery (charges in slot)
Battery replacement requires opening and re-gluing
Aftermarket keys may use replaceable CR2032

Lock / decoding info:
Opening direction (LHD): counter-clockwise
Door lock supported
8 cuts / 4 depths
Symmetrical cuts on both sides
Key code readable from CAS module

Tools used:
Xhorse VVDI2 / Key Tool / VVDI Prog
Autel IM608 / IM508
Abrites AVDI
Lonsdor K518 PRO
CGDI BMW
Smart Pro
OBDSTAR X300
Zed-Full
Xtool X100 Pad
EEPROM tools (XPROG, etc.)

Reference:
Add key: ~30 min
All keys lost: ~90 min

Keys supported:

Universal:
Xhorse smart key 433 MHz / 868 MHz

Original:
Slot Key PCB
Smart Key PCB (v1 / v2)

Aftermarket tested:
Smart key 868 MHz WJZ-048E
Smart key 868 MHz KYDZ
Slot key 868 MHz KYDZ

Included:
Key, cutting, programming, full test

Service:
Same-day solution. Ready to drive.