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What is SRS Crash Data?
SRS crash data is critical information recorded in a vehicle’s airbag control module (ACM) during a collision, including details on airbag deployment, vehicle speed, and seatbelt tensioner activity. This data locks the module, disables the safety system, and activates a dashboard warning light, often requiring professional service to clear it from the system or replace the module. Clearing this data involves specialized tools and software to reset the module and restore the airbag system to functionality, or sometimes necessitates replacing the control unit entirely.
- Definition: A record of the collision event stored in the airbag control module (ACM) or Sensing Diagnostic Module (SDM).
- Information Recorded: Details like vehicle speed, seatbelt tensioner activation, and airbag deployment status are logged.
- Purpose: The data acts as a digital record of the crash event, crucial for accident reconstruction and insurance purposes.
What it records: An Event Data Recorder (EDR), often part of the SRS control module, records vehicle information in the moments leading up to and during a crash. This can include:
- Airbag and seatbelt deployment status
- Vehicle speed
- Braking and throttle application
- Other sensor data, such as angle of impact
What happens after a crash: After an accident, the module locks to permanently store this crash data and may turn on the airbag warning light. The module must be reset or replaced by a professional after repairs, as standard diagnostic tools cannot clear this “hard” crash data.
Why is it Stored?
- Safety System Lockout: When an accident occurs, the SRS crash data locks the module to prevent accidental deployment of airbags in the future and signifies that the safety system is compromised.
- Indicator of Damage: The presence of “hard codes” related to crash data confirms that the safety system needs attention, such as component replacement.
How to Handle SRS Crash Data
- Identify the Issue: A persistent airbag warning light on your dashboard after an accident indicates that crash data is stored in the ACM.
- Consult a Professional: While some minor faults can be cleared with an OBD2 scan tool, crash data is a “hard code” that often requires specialized equipment to clear or reset.
- Module Reset Service: Many auto services offer a module reset service that uses proprietary software to erase crash data and return the module to a reusable state.
- Module Replacement: In some cases, especially after a severe crash, the control unit may be damaged and requires replacement with a new or used unit.
- Professional Clearance Tools: Specialised tools like the OBDStar P50
are available for clearing crash data via the OBD port for some vehicle models, and EEPROM readers such as Multi PROG, VVDI Prog or XGecu T76 are commonly used to directly read, edit, and clear crash data stored in airbag control modules.
Folders
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- A163 542 29 18 HC912B32
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- A203 820 64 85 0 285 001 866 912B32
- A204
- A204 820 21 85 95640
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- A204 820 82 85 5WK43608 95128
- A204 820 82 85 5WK43608 95640
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- A230 820 41 26 9S12DG128
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- A906 446 05 42 0 285 010 054 95320
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- S500
- W169 A-KLASSE
- W210 001 820 23 26
- А164 820 95 85 0 285 010 215 95640
Files
- 001 820 00 26 01 - MRSZ 12767501 MCE KA4 Mercedes E-Class 1996 Error.bin (640.00 B)
- 002_820_21_26 (81) crash.bin (768.00 B)
- 002_820_21_26_(81) clear.bin (768.00 B)
- A 002 820 64 26 Q1 - TEMIC 4137 - ARMADA 16 RD - D6V2G31AMV6 - 500207310700 Processor Motorola 3K91D - HC912DG128 112 QFP .bin (2.00 KB)
- Mercedes A150 TRW 6726 95320 clear test.EPR (4.00 KB)
- Mercedes A150 TRW 6726 95320 Crash.EPR (4.00 KB)
- Mercedes A169 A169820662627052731985J TRW 6626 95320 Crash.bin (4.00 KB)
- Mercedes W203 68hc12be32 Crash.bin (768.00 B)
- Mercedes W203 68hc12be32 OK.bin (768.00 B)
- Mercedes W203 Crash.dat (768.00 B)
Index of /SRS-Crash-Data/
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