The heater valve is integral come a vehicle’s cooling system. Replacing one needs a brand-new valve, some straightforward tools, and fresh coolant.

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

Tip: If the vehicle is one automatic through a shifter in the console, you might want to place the car in low gear before disconnecting the battery to offer you an ext space come work.


Step 2: advanced the vehicle. If you have the right to not easily reach the lower radiator hose, jack the vehicle up and also secure that on jack stands to gain better access.


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


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

Tip: Oftentimes the hose will stick together if that is glued in place. By twisting, you deserve to break this bond and also make it much simpler to remove.

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


Step 5: find your heater regulate valve. Part heater control valves will certainly be situated in the engine compartment in ~ or near the passenger side firewall. Others are located behind the dashboard near the passenger footwell.

Refer come the factory company manual because that your car to recognize the specific location. In this guide, that is assumed the the manage valve is located behind the dash.

Note: for the procedures that follow, girlfriend will need to continue referring to the factory organization manual because that details about what needs to be removed and the place and number of fasteners that need to be removed as well.


Step 6: eliminate the gloves box assembly open up the glove box door and also locate the attachments screws located along the external edge the the glove box. Remove the screws v the suitable screwdriver or ratchet and also socket. Gently pull on the glove box assembly to eliminate from dash and also disconnect any kind of electrical connectors connected to the gloves box assembly.


Step 7: remove the dashboard. Situate the attachment screws, generally along the peak edge and also bottom edges. There may be other fasteners on the sides, escape on automobile design. Eliminate the attachment screws using an suitable tool. Gently however firmly pull on the dashboard and slowly eliminate it, making sure to disconnect any remaining electrical connectors that may prevent friend from removing the dashboard.

Be cautious not to traction on any type of wire or manage cables.

Tip: Take images of exactly how the wires and also cables are routed and also where all the electric connectors go. Later you can use the photos come ensure every little thing is put back together properly.

At this suggest you might see the heater regulate valve, however in some situations you will should remove the heater box to acquire access.


Step 8: eliminate the heater control valve find the mounting bolts or screws that host the heater manage valve in place.

Remove the fasteners with an ideal tool and remove the valve. Pay attention to that orientation.

Step 9: Prepare the hoses. To assist prevent leaks, completely clean the inner of any hoses that were removed and the ingredient you room reattaching it to.

Step 10: download the brand-new heater control valve. Install the new valve in the exact same position and also orientation together the old valve.

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

Refer to the photos friend took earlier if necessary.

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


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

Step 14: Bleed all the air out. To gain all the air out of the cooling system, girlfriend will should start the vehicle, revolve the heater on high, and permit the car to achieve normal operation temperature.

Keep topping off the coolant as essential until the mechanism is totally full, checking for leaks wherein hoses were removed and also installed.

Step 15: Clean increase afterward. Dispose that the used coolant in a way that corresponds to regional laws and also regulations.

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Each vehicle model is draft differently; thus it is crucial to refer to the manufacturer’s factory company manual for your car for added details. If you would choose a expert technician, such as one from, to replace your heater manage valve because that you, one of our mobile mechanics have the right to work on your car at your residence or office.