Electric Brake Booster Pump Assembly ️

This unit keeps brake assist strong and consistent, even when engine vacuum is low or during stop‑and‑go driving. It pressurizes the booster’s accumulator so your pedal feels firm yet light, helping ABS and stability systems react fast. If you want confident, repeatable stopping and fewer warning lights, this is the key component.

Why you need it

Without a healthy pump, assist pressure drops. That means hard pedal, longer stopping distance, and safety features may switch off. Replacing a tired pump restores proper boost and protects the master cylinder and actuator from strain.

How it works ⚙️

An electric motor drives an internal hydraulic section that charges the accumulator. A pressure sensor tells the control module when to start/stop the motor. Check valves hold pressure so assist is instant. The system supports ABS/VSC by keeping stable pressure on demand.

What happens if it fails ⚠️

• Hard brake pedal and increased stopping distance
• ABS/Brake/Slip lights on; buzzer may sound
• Pump runs constantly, gets noisy, or won’t run at all
• Possible fluid aeration and uneven pedal feel

Tech tips

Use fresh DOT 3/4 as specified, check for leaks, and bleed with a scan tool to cycle valves. Secure mounts to reduce vibration and noise. Replace worn grommets and seals for quiet operation.

Compatibility

• Highlander