Symbol 0238 from ISO 7000 - Title/Meaning: Parking brake Function/description: To indicate that the park brake has failed or is malfunctioning or is not operating within the specified range of parameters.
pay attention to orientation of symbolApplication referenced in: ISO 2575, ISO 6405-1:2004, ISO 6727
Additional information: 
On road vehicles: 

tell-tale shall be red
in the case where a single tell-tale indicates more than one brake system condition, the symbol for brake failure (ISO 7000-0239) shall be used.
Own work using: iso.org/obp/graphics/grs/fb8f74de-47c2-4e13-a63c-8c4f3f3a55d3 200.png
Vectorization:  Mrmw