The heater valve is integral to a vehicle’s cooling system. Replacing one requires a brand-new valve, some an easy tools, and also fresh coolant.

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Step 1: Disconnect the battery. Loosen the organize down nut and also bolt indigenous the an adverse battery cable end and remove the connector native the battery post. This will prevent any kind of shorts native damaging the electrical components.

Tip: If the vehicle is an automatic with a shifter in the console, you might want to place the auto in short gear prior to disconnecting the battery to give you an ext space to work.


Step 2: raise the vehicle. If you have the right to not quickly reach the reduced radiator hose, jack the vehicle up and also secure it on jack stands to gain much better access.


Step 3: ar the drainpipe pan under the vehicle. In order to capture the coolant that will be drained, you will should put the drain pan under the lower radiator hose.


Step 4: remove the reduced radiator hose. Eliminate the lower radiator hose from the radiator by first loosening the clamp and then gently yet firmly twisting the water tap to ensure the it is not stuck on.

Tip: Oftentimes the hose will certainly stick as if that is glued in place. By twisting, you can break this bond and make that much less complicated to remove.

Remove the hose and also drain the engine coolant into the drain pan.


Step 5: find your heater regulate valve. Some heater manage valves will certainly be situated in the engine compartment in ~ or near the passenger next firewall. Others are located behind the dashboard close to the passenger footwell.

Refer to the factory service manual because that your auto to determine the exact location. In this guide, it is assumed the the manage valve is located behind the dash.

Note: because that the steps that follow, you will need to proceed referring come the factory company manual because that details around what needs to be removed and also the ar and number of fasteners that must be eliminated as well.


Step 6: eliminate the gloves box assembly open up the glove box door and locate the attachments screws located along the outer edge that the glove box. Remove the screws with the proper screwdriver or ratchet and socket. Gently traction on the glove box assembly to remove from dash and disconnect any electrical connectors linked to the gloves box assembly.


Step 7: eliminate the dashboard. Locate the attachment screws, usually along the top edge and also bottom edges. There may be various other fasteners ~ above the sides, escape on car design. Remove the attachments screws using an appropriate tool. Gently but firmly traction on the dashboard and slowly eliminate it, making certain to disconnect any type of remaining electric connectors that may prevent friend from removed the dashboard.

Be mindful not to traction on any kind of wire or manage cables.

Tip: Take pictures of just how the wires and cables space routed and where all the electrical connectors go. Later on you can use the photos come ensure every little thing is put back together properly.

At this point you may see the heater regulate valve, yet in some cases you will must remove the heater box to gain access.


Step 8: remove the heater manage valve situate the mounting bolts or screws that hold the heater manage valve in place.

Remove the fasteners with an suitable tool and remove the valve. Pay fist to that orientation.

Step 9: Prepare the hoses. To aid prevent leaks, extensively clean the interior of any type of hoses the were removed and the ingredient you room reattaching that to.

Step 10: download the brand-new heater manage valve. Install the new valve in the very same position and also orientation as the old valve.

Step 11: Reassemble the dashboard and also glove box. Reinstall the dashboard, glove box, and also any other materials that to be removed.

Refer to the photos girlfriend took previously if necessary.

Step 12: change the reduced radiator hose. Reattach the reduced radiator hose and tighten the water tap clamp.


Step 13: Refill the cooling system. Use a 50/50 mixture that antifreeze and distilled or demineralized water come refill the cooling system.

Step 14: Bleed every the air out. To acquire all the air the end of the cooling system, you will must start the vehicle, revolve the heater ~ above high, and enable the automobile to attain normal operation temperature.

Keep topping turn off the coolant as required until the system is totally full, checking for leaks where hoses to be removed and also installed.

Step 15: Clean increase afterward. Dispose the the provided coolant in a path that synchronizes to neighborhood laws and regulations.

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Each auto model is design differently; because of this it is crucial to refer to the manufacturer’s factory service manual because that your automobile for additional details. If you would like a professional technician, such together one native, to change your heater control valve because that you, among our cell phone mechanics can work on your vehicle at your home or office.