# 1991 BMW 525I — ENGINE AND ENGINE COOLING:COOLING SYSTEM
> NHTSA complaint `135885` · 1999-02-03 · BMW of North America, LLC
## Severity
- **Deaths:** 0
- **Injured:** 1
- **Fire:** No
- **Crash:** No
- **Police report:** No
- **Medical attention:** No
- **Vehicle towed:** No
## Vehicle
- **Make:** BMW
- **Model:** 525I
- **Year:** 1991
- **Manufacturer:** BMW of North America, LLC
- **Component:** ENGINE AND ENGINE COOLING:COOLING SYSTEM
## Narrative
ENGINE COOLING SYSTEM DESIGN CONTAINS A FLAW, WHEN REMOVING RADIATOR CAP CONSUMER SUSTAINED BURN INJURIES DUE TO CAP NOT HAVING A TWO-STAGE RELEASE, O-RINGS AT THE BASE OF THE CAP ENSURE THAT THE PRESSURE IS MAINTAINED WITHIN THE RADIATOR UNTIL THE CAP IS FULLY UNSCREWED.
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*Source: [NHTSA ODI](https://www-odi.nhtsa.dot.gov/downloads/) · AI Analytics · CC0 1.0*