OBD-II code · Chassis
C05AD Brake Blending System Performance
Brake blending system performance fault — coordination between regenerative and hydraulic braking degraded.
Is it safe to drive with C05AD?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyBlending logic fault
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Brake Blending System
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.