Wrench Light on Ford [What Does it Mean?]

Some Ford vehicles’ dashboards display the “Wrench Light” as a warning when there is an issue with the engine or transmission.

When this light comes on, it typically means that there is a problem with the engine or a part that affects emissions. 

Although this warning symbol may be alarming, it is intended to inform the driver that there may be a problem that needs to be fixed right away.

In this article, we’ll look at the various reasons why Ford vehicles might display the wrench light, what it means, and how to fix it.

Wrench Light on Ford

What Does the Wrench Light Mean on a Ford? 

A Powertrain issue is indicated by the wrench light on a Ford vehicle. If the engine or transmission is malfunctioning, the vehicle’s computer will flash the wrench icon and reduce engine power.

A number of problems involving the powertrain’s parts, including the engine, driveshaft, and transmission, could turn on the wrench warning light on the dashboard.

Why is There a Wrench Light Illumination on my Ford Dashboard?

1. Faulty Electronic Throttle Control System

 The wrench light might turn on if there is a problem with this system. In cars, electronic throttle control (ETC) replaces a mechanical linkage by electronically “connecting” the accelerator pedal and the throttle.

This system consists of an accelerator pedal module, a throttle valve, and a powertrain or engine control. The ETC system controls the throttle opening in the engine.

2. Transmission Issues

The TCM notifies the Engine Control Module (ECM) of any potential problems with the automatic transmission control module while also keeping an eye on the sensors and actuators involved in transmission control.

When the transmission control module (TCM) notices a problem, the trouble code P0700 is set.

Consequently, the wrench warning frequently indicates a transmission issue as the cause of the issue. Using engine sensors, the Engine Control Module (ECM) or Powertrain Control Module (PCM) locates the issue’s origin.

A malfunctioning transmission could be the cause of this, which could also be a major problem, like low fluid levels. 

3. Engine Issues

If the engine has a problem, the wrench light might turn on. Problems with the fuel system, the spark plugs, or other parts might cause this. It may indicate a more serious issue if the wrench light comes on as a result of an engine problem.

One of a car’s most important parts, the carburetor, when damaged, causes jolting and overheating.

This problem is easily detected by your car’s computer, which turns on the wrench light to alert you that it’s time to take your Ford to a mechanic to determine whether it needs cleaning or a rebuild. 

The carburetor may need to be replaced in some circumstances. Therefore, to stop further damage, the car needs to be serviced and inspected as soon as possible. 

4. Battery Problems 

If your Ford has a weak or dead battery, a wrench light warning may also be visible. Make sure to check your battery and replace it right away if it is weak or dead to prevent potential damage to your car. 

It’s critical to act right away to protect your safety and stop any further damage. The best course of action is to have your car checked out by a mechanic or dealership if the wrench light continues to come on after changing the battery.

5. Car Due for an Oil Change

If you haven’t recently changed the oil in your Ford car, you should do it right away. When the time is right, the amber wrench light will notify you.

Ford advises you to have your oil changed up to six times every three months. Make sure you adhere to the correct procedures to keep your car in good working order. The light normally goes out after you change your oil.  

6. Faulty Sensors

If one of the vehicle’s sensors isn’t working properly, the wrench light might turn on. This might be the result of an oxygen sensor, a coolant temperature sensor, or another sensor going bad. 

You must take action to identify and fix the problem as soon as possible to prevent further harm. You can replace or repair the damaged sensor.

Furthermore, regular vehicle maintenance and inspection can assist you in spotting any potential issues before they worsen.  

How Do the Check Engine Light and Wrench Light Differ on a Ford?

There are some similarities and differences between a wrench light and a check engine light. Every car will have a check engine light, which is a feature of the common OBDII System (On-Board Diagnostics). 

Ford vehicles are the only ones that include the wrench light. Ford engineers designed the wrench light as a built-in warning system.


Can You Drive with a Powertrain Malfunction Light?

It’s best for you to stop driving once the light comes on, but you should have your car checked out as soon as you can by a licensed dealer. If the computer detects a problem with your car’s four-wheel-drive system or drivetrain, it will illuminate.

You should have the system checked as soon as possible by an authorized dealer. Because if you try to drive again, your Ford Fusion might go into the fail-safe mode to reduce engine power.

Does the Wrench Light Mean an Oil Change?

This is a warning sign that the oil needs to be changed. If that has been done, then it’s possible that after you have changed the computer, it wasn’t reset.

In that case, flip the switch on instead of starting the engine. The reset indicator should flash after you quickly press the gas pedal three times.

Read: Mercedes Service B9


The “Wrench Light” is a warning symbol that should not be disregarded on the dashboard of a Ford vehicle. It suggests that there is a problem with the engine or a part that affects emissions that need to be fixed right away.

Ford vehicle problems with the throttle body, transmission, or engine are some of the frequent causes of wrench lights.

In order to avoid further damage or expensive repairs, it is crucial to have the wrench light on your Ford vehicle diagnosed and fixed by a qualified mechanic.

Regular vehicle maintenance and servicing can help prevent such problems from arising, and it is always preferable to have any unusual symptoms or signs checked as soon as possible.