Yanhua Module 1 CAS Module for BMW CAS1-CAS4+ IMMO Key Programming
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Return Policy
At Locksmith Keyless, we prioritize your satisfaction and offer a simple return process. Returns are accepted within 30 days of purchase for unused items in original packaging. Certain items, including OEM keys, Lishi tools, and customized orders, are non-returnable. A restocking fee of up to 30% may apply. For a full list of non-returnable items and more details, please refer to our complete return policy.
For damaged, missing, or incorrect items, please contact us within 48 hours of delivery. All returns require an RMA number. Shipping costs for returns are the responsibility of the customer.
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Description
Description
Yanhua Module 1 CAS Module for BMW CAS1-CAS4+ IMMO Key Programming
Yanhua Mini ACDP Module 1 CAS Module support BMW CAS1 CAS2 CAS3 CAS3+ CAS4 CAS4+ IMMO Key Programming, Odometer Reset by OBD or ICP mode, Read/Write EEPROM and FLASH data. No soldering need!!! Yanhua ACDP CAS Module Update for Free Read/Write CAS ISN(Replace DME)
Function:
- Support CAS1-CAS4+ IMMO key programming and mileage reset through OBD mode.
- Support CAS3+/3++, CAS4/CAS4+ key programming, and mileage reset by ICP. Data reading and writing without lifting the pin. No removing any components, Intelligent detection.
- Support CAS1-CAS4+ data restore. It can modify vehicle frequency, VIN, ISN code, or replace CAS module by modifying EE data.
- Support OBD restore CAS3/CAS3+/CAS3+ problem caused by the downgrade.
- Support CAS1-CAS4+ read/write EEPROM and flash data.
Feature:
- Support CAS1-CAS4+ IMMO key programming and mileage reset through OBD mode.
- Support 9S12DXP512/9S12XEP100.
- No need to downgrade CAS version.
- Much safer and more efficient! Operation time reduced from dozens of minutes to few minutes.
CAS1-CAS3+ Module:
- Key Programming by OBD
- Read CAS EEPROM
- Add Keys
- Reset Mileage
- Back up or recover CAS
- All keys Lost
CAS4/CAS4+ Module:
- Read CAS4 EEPROM without soldering/welding
- Add Keys without soldering/welding
- Reset Mileage without soldering/welding
- Back up or recover CAS without soldering/welding
- All keys Lost without soldering/welding
BMW CAS1-CAS4+ Mileage Programming:
- No need to remove chip
- No need soldering
- No need to cut the line
- No need to lift the pin
The comparison between ACDP and other devices for reading/writing CAS4:
The oter devices to use the traditional way--soldering to read/write data
- Cutting lines
- Cutting these two lines on PCB as marked, and soldering them back after reading/writing data is completed. Please note the risk of cutting lines because it may cause the module damage

- Removing components
- Removing these 4 components as marked, and soldering them back after reading/writing data is complete. It is such a long time and complicated operation

- Lifting pins
- Lifting the chip piins for wiring, and soldering them back after reading/writing data is completed. But is if full of risk since the chip pins are easy to break when lifting

Disadvantages:
- Requiring soldering, which with complicated and long time operation
- Requiring cutting lines, lifting pins or removing components, which with the risk of module damage
- Manual soldering is risky and unreliable. Any faulty solder amy cause the data lost.
ACDP reading/writing data by ICP
Advantages:
- Interface board replaces the soldering to make operation simple and efficient.
- No cutting lines, no lifting pins, no removing components and no soldering.
- Pin intelligent detection to ensure data reading/writing safe and reliable.
ACDP BMW CAS1-CAS4+ Configuration Package List:
Adapter Name | Quantity | Picture | Function |
BDM01 adapter | 1pc | ![]() | Applicable to decrypt BMW CAS EEPROM. |
BDM-ICP cable | 1pc | ![]() | Applicable to read/write data by ICP with BDMO1 adapter. |
BMW-CAS3 board | 1pc | ![]() | Applicable to connectCAS3/CAS3+ test points. Used with BDM01 adapter. |
BMW-CAS4 board | 1pc | ![]() | Applicable to connectCAS4/CAS4+ test points. Used with BDM01 adapter. |
BMW-CAS4 Interface board Buckle | 1pc | ![]() | Applicable to fix BMW-CAS4 interface board and CAS board. |
CAS3 Copper pillar Package(M2.5*12+6mm) | 6pc | ![]() | Applicable to fix BMW-CAS3 interface board. |
CAS4 Copper pillar Package(M2.5*12+6mm) | 6pc | ![]() | Applicable to fix BMW-CAS4 interface board |
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The customer service is a mess. Multiple people jump in the email chain and contradict each other. There are also people there who go out of their way to make your life more difficult. If you order from them, make sure you read the fine print because many items are exempted from return "regardless of their condition" as was stated to me in an email. I.e. whether they are damaged or whether you try to cancel the order before they deliver it.
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