How To Replace Low Coast Brake Solenoid Valve: Simple & Easy Guide

How To Replace Low Coast Brake Solenoid Valve

A faulty or sticking brake solenoid valve can cause problems with the vehicle’s braking ability. 

Replacing a bad brake solenoid valve as soon as possible is important to restore the safe braking .

Fortunately, low cost brake solenoid valves are available that makes this repair affordable for do-it-yourselfers. 

With some basic tools and mechanical ability, you can replace your brake solenoid valve more easily.

Gather the Required Materials

Before starting, make sure you have all the required materials on hand for replacing the brake solenoid valve:

  • You need a Low Cost Replacement Brake Solenoid Valve
  • Make sure that the replacement matches your vehicle make and model
  • Purchase from an auto parts store or an online retailer
  • This might cost typically between $20-50

Basic Hand Tools

  • Ratchet and a socket set
  • Pliers
  • Screwdrivers

Protective Equipments

  • Safety glasses
  • Work gloves

Replacement of Brake Fluid Type

  • Use a fresh DOT 3 or DOT 4 brake fluid

Disconnect the Power Source

With the materials gathered, now you’re ready to start the repair. 

First step is to disconnect the battery:

Step 1: Park the vehicle

  • Choose a flat surface with plenty of space
  • Then engage the parking brake
  • Finally, block the wheels with chocks

Step 2: Disconnect the Negative Battery Terminal

  • Use an appropriate sized wrench or a socket
  • Next, wrap the terminal with a clean rag

NOTE: Disconnecting the battery cuts power to the brake system and avoids electrical shorts while working.

Step 3: Access the Brake Solenoid Valve

The location of the brake solenoid valve varies by vehicle. 

Consult your repair manual for the specifics. 

Common locations include:

Under the Hood Near the Master Cylinder

  • Trace the brake lines in your vehicle from the master cylinder
  • This may be mounted to the firewall or the frame rail

Behind the ABS Module

  • Module often located in the engine bay
  • Valve usually connects into the hydraulic control unit

Near the Brake Proportioning Valve

  • Typically on the frame rail or near the rear axle

Carefully clean any dirt, oil or debris from around the valve. Having a clean working area helps to avoid contamination when disconnecting the brake lines.

Step 4: Disconnect the Brake Lines and the Remove Valve

With the valve accessed, you can disconnect the brake lines and the electrical connector

To do that:

Remove the Electrical Connector

  • Depress the tab which is on the connector to detach from the valve
  • Then tape the end to prevent any contamination

Step 5: Loosen the Brake Line Fittings

  • Use a line wrench to loosen the nut connections
  • Plug the lines or the wrap with rags to contain the fluid

Step 6: Remove the Brake Solenoid Mounting Bolts

  • Use an appropriate sized socket for mounting bolts
  • Catch the valve so it does not fall, when once it is detached

Inspect the mounting surface and the old valve. Flush with brake cleaner if needed to remove any grease or debris before the new valve is installed.

Step 7: Install the New Brake Solenoid Valve

Installation of the new brake solenoid valve is the reverse of removal:

Mount the Valve and Tighten the Bolts

  • Refer to torque specs for proper tightening
  • Make sure that you don’t over tight

Step 8: Reattach the Brake Line Fittings

  • Use a line wrench to tighten it carefully
  • Do not allow any dirt or contaminants on the fittings

Step 9: Reconnect the Electrical Plug

  • Make sure that the connector clicks, which indicates a full connection
  • Double check all connections are tight. Also confirm the valve is mounted properly without leaks before moving to the next step.

Step 10: Refill the Brake Fluid and Bleed the System

  • With the new brake valve installed, brake fluid and a proper bleeding is critical in this situation.

Step 11: Reset the Electrical Systems and Confirm the Repair

  • As a final step, reset the vehicle electrical systems and confirm that there is a proper operation onboard by reconnecting the battery..

FAQs About How To Replace Low Coast Brake Solenoid Valve

Q: What are symptoms of a bad brake solenoid valve?

A: Symptoms include ABS and brake warning lights staying on, soft/spongy brake pedal, loss of braking resulting in long stopping distances, brakes pulling to one side, and loud clicking noises from the valve that is trying to cycle the open and close positions.

Q: Can I drive with a bad solenoid valve?

A: It is not recommended. A malfunctioning solenoid valve can greatly reduce braking ability and lead to a dangerous situation. 

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