Brake fluid and brake-by-wire
Why fluid still needs changing, and why some EVs need a service mode first.
You'll learn
- Understand brake fluid and brake-by-wire
- Know which checks an owner can do and which need a professional
- Recognise warning signs early
Overview
Brake fluid absorbs moisture over time, which lowers its boiling point and causes internal corrosion, however little the brakes are used.
In depth
Most makers recommend testing or replacing brake fluid every two years.
Service mode required
Many EVs with electronic brakes can build pressure on their own. Technicians must enable a service mode before working on them.
Key takeaways
Remember this
- Replace brake fluid about every two years.
- Electronic brakes need service mode.
- This is professional work.
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