R270 (software v1.20) is an in-circuit EEPROM/MCU programmer used for BMW CAS/EWS and Mercedes-Benz EZS work, cluster/LCM service, and M35080/160D/35160 series memory operations.



Highlights

• Direct in-circuit read/write of Motorola/Freescale HC9S12/HC12/HC908 families commonly used in CAS/EWS/EZS.
• Dedicated functions for M35080/080D0WQ/160D/35160 families (quick erase, read, write).
• LCM/cluster service helpers (e.g., reset LCM odometer to zero after repair).
• Hex editor + save/load binary with checksum display.
• Works on standard Windows PCs over USB; no need to desolder for many jobs.

Supported devices (examples)

• BMW CAS/CAS4/ EWS4 MCU masks: 0K50E, 2K79X, 0L01Y, 0L15Y, 1L15Y, 2L86D, etc.
• Mercedes-Benz EZS/EIS MCU masks: 1J35D, 2J74Y, 4J74Y, 3K91D, 1L85D, 1L59W, 3L40K, 4L40K, etc.
• EEPROM families: M35080 / M35080-V6 / M35080-VP / 080D0WQ / 160D / 35160 (and related).

Package contents

• R270 software v1.20 installer.
• USB driver + documentation (where provided by your kit).
• Utility modules inside the app: M35080/160D/35160 tool, LCM Function, IC mask selection.

Basic usage

• Install software (run SETUP) and drivers, then connect R270 via USB.
• Select MCU → choose the correct mask set (HC9S12/HC908) or pick the EEPROM family.
• Use Read / Write / Save Binary File for normal jobs; use module buttons for M35080/160D/35160 and LCM tasks.
• Always make verified backups before modifying data.

Operating systems
Windows XP/7 officially; often works on newer Windows with compatibility + admin rights (depends on driver).

Minimum system requirements

• CPU: Dual-core
• RAM: 2 GB+
• USB 2.0 port
• Disk: 200 MB free

Notes
Coverage depends on your hardware bundle/adapters and soldering access on the target module. Some jobs still require lifting pins or working off-board.

Disclaimer
For educational/service use on vehicles you own or are authorized to service. The post provides information only and does not include or endorse any bypass tools. Always comply with local laws and OEM terms.

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