ABS Fluid Level Sensor
Sensor:
• Part Cost: $40 – $80
• Labor Time: ~0.5 hr ($125 × 0.5 = $62.50)
• Total: $102.50 – $142.50
Wiring Harness (if needed):
• Part Cost: $20 – $60
• Labor Time: ~0.5 hr ($125 × 0.5 = $62.50)
• Total: $82.50 – $122.50
Reservoir Grommet/Seals (if replaced):
• Part Cost: $5 – $20
• Labor Time: ~0.3 hr ($125 × 0.3 $37.50)
• Total: $42.50 – $57.50
Float Mechanism
1.Remove the reservoir cap:Safely detach the brake fluid reservoir cap to access the float. 2.Inspect for damage or blockage:Check the float for cracks, stuck debris, or signs of wear. 3.Clean or replace:If debris is present, clean with fresh brake fluid or appropriate cleaner. Replace the float assembly if it’s severely damaged. 4.Reinstall and test movement:Ensure the float moves freely and reinstall the reservoir cap once the float is secured.
Reed Switch (Sensor Switch)
1.Disconnect the battery:Remove the negative terminal to prevent electrical shorts. 2.Locate the sensor switch:It’s typically housed within the brake fluid reservoir or attached to the float assembly. 3.Test continuity:Use a multimeter to check for proper electrical readings. Replace the switch if readings fall outside specifications. 4.Reinstall and confirm operation:Secure the switch, reconnect the battery, and verify that the warning light responds correctly.
Electrical Connector
1.Secure workspace:Ensure the ignition is off and the battery is disconnected. 2.Detach the connector:Gently remove the connector at the fluid level sensor, being careful not to damage any wiring. 3.Clean contacts:Use electrical contact cleaner on corroded or dirty terminals. 4.Reattach securely:Snap the connector back in place and confirm a snug fit to prevent moisture intrusion or vibration-related disconnection.
Wiring Harness
1.Inspect for visible damage:Look for frayed wires, cracked insulation, or exposed metal along the harness. 2.Repair or replace:If damage is minimal, secure the harness with shrink tubing or electrical tape. If severely worn, replace it entirely. 3.Secure routing:Ensure the harness is routed away from hot surfaces or moving parts to prevent future wear. 4.Perform a final test:Restore battery power, then verify the fluid level sensor signal via the dashboard warning light.
Rubber Grommet or Seal
1.Remove old seal:Carefully pry out the grommet or seal located around the sensor or reservoir to avoid damage to the surrounding components. 2.Inspect sealing surface:Clean away any residue or gasket material to create a smooth contact area. 3.Install new seal:Apply a light coating of brake fluid on the new grommet for easier placement. 4.Check for leaks:After reassembly, ensure there are no leaks by examining the reservoir for fluid seepage or drops in fluid level.
What is an Anti-Lock Brake (ABS) Fluid Level Sensor and what does it do
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Sensor Housing
Cracks or Leaks: Visible damage to the housing can allow dirt, debris, or fluid leakage, causing inaccurate readings or sensor malfunction.
Moisture Intrusion: If water or brake fluid penetrates the housing, corrosion can occur, leading to intermittent or failed sensor signals.
Float Mechanism
Sticking or Jamming: A float that becomes stuck can result in a constant “low fluid” warning, even if fluid levels are normal.
Erratic Readings: Fluctuating or unpredictable warnings often indicate the float is no longer moving freely within the sensor assembly.
Electrical Connector
Loose or Damaged Plugs: If connectors vibrate loose or pins bend, it can disrupt the signal, causing warning lights to flicker or remain on.
Corroded Contacts: Signs of rust or white residue on plugs can interfere with electric current, triggering false alerts.
Wiring Harness
Frayed or Exposed Wires: Damaged wiring can create shorts or open circuits, leading to intermittent sensor readings or permanent warning lights.
Poor Insulation: Cracked or brittle insulation may allow moisture to reach the wires, causing erratic signals and potential failure.
Mounting Grommet or Bracket
Loose Fitment: A sensor that shifts or vibrates excessively may produce inconsistent fluid level readings.
Degraded Rubber Components: Rubber grommets can harden or crack over time, letting the sensor move out of alignment and resulting in faulty warnings.
How It Works
- Get a quote online or set-up a time to have your vehicle looked at.
- Pick time slots that work for you, easily, online.
- We will confirm appointments and send reminders.
- Our mechanics bring everything that is needed to you.
- All you have to do is provided a safe area for the work to be performed.
What we need from you
- A safe place to work on your vehicle
- No working on the side of busy roads
- No working on unstable or steep surfaces.
- We do not perform repairs during severe weather.
- Authorization from a property owner or management.
- Repair work done in a parking lot or at your requires permission.
- We do not do repairs in areas restricted by law.
Common Questions
Service Area
Our primary service area is greater Grand Rapids and includes Comstock Park, East Grand Rapids, Grandville, Kentwood, Walker, and Wyoming
Our secondary service area is provided by our Belding location and includes: Belding, Greenville, Ionia and the sorrounding areas.
Contact us if you have any questions about where we provide services.
