Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Brake Fluid Level Sensor/Switch: Service and Repair

Master Cylinder:





Remove or Disconnect

Fluid Level Sensor:





1. Electrical connector from fluid level sensor.

Removing Fluid Level Sensor (Typical):





2. Fluid level sensor using needle nose pliers to compress switch-locking tabs at outboard side of master cylinder.

Install or Connect
1. Fluid level sensor until locking tabs snap into place.
2. Electrical connector to fluid level sensor.