DTC U0515-00: Error Signal Received From Start Stop Unit: Notes

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0515:00 RADAR UNIT DETECTION CONDITION AND POSSIBLE CAUSE

Description

Error signal received from start stop unit

Detection condition

Communication error between start stop unit and radar unit

Fail-safe

Inhibits the Mazda radar cruise control (MRCC) system control
Inhibits the smart brake support (SBS) system control⁽¹⁾
Inhibits the distance recognition support system (DRSS) control⁽¹⁾

Possible cause

DTCs are stored in the start stop unit.
- Start stop unit malfunction
Radar unit malfunction

System wiring diagram

Not applicable

⁽¹⁾	Enabled depending on malfunction content.