How to Fix a DeWalt Cordless Drill That Won’t Turn On

A DeWalt cordless drill is built to handle tough jobs, but sometimes it refuses to power up. This can stop your project in its tracks and leave you wondering if the tool is broken. The good news is that most issues can be fixed with a few checks and adjustments.

Why Your DeWalt Cordless Drill Might Not Turn On

• Battery is drained, damaged, or not inserted correctly.
• Contacts between the drill and battery are dirty.
• Trigger switch or safety lock is stuck.
• Motor overheated after long use.
• Internal wiring or parts may be worn out.

Check the Battery.

A dead or poorly seated battery is the most common reason a cordless drill will not turn on. Ensuring the battery is properly charged and connected is the first step.

1. Remove the battery pack from the drill, and then check if the terminals are clean.
2. Insert the battery into the charger, wait until it shows a full charge, and then reinstall it into the drill.

Inspect the Battery Contacts.

Dust, grease, or corrosion on the battery contacts can block the electrical flow. Cleaning them often restores proper power delivery.

1. Take out the battery, and then look closely at the contacts on both the drill and battery.
2. Use a dry cloth or cotton swab with rubbing alcohol to clean the contacts, then reinsert the battery firmly.

Check the Safety Lock and Trigger.

DeWalt drills often come with a safety lock near the trigger. If it is engaged or the trigger is stuck, the drill will not respond.

1. Locate the forward/reverse switch above the trigger, and then move it back and forth.
2. Squeeze the trigger gently to ensure it clicks and feels responsive.

Let the Motor Cool Down.

Overheating can trigger built-in protection that prevents the drill from turning on. This is more likely if the tool was pushed hard for a long time.

1. Remove the battery, and then let the drill rest for at least 15 minutes.
2. Reinsert the battery, and then try powering it on again.

Test with Another Battery.

If you have more than one DeWalt battery, testing with another pack can confirm if the issue is with the drill or the battery itself.

1. Remove the current battery, and then install a fully charged spare battery.
2. Try turning on the drill to see if it works. If it does, the original battery may need replacing.

Consider Professional Repair.

If none of the above steps work, the problem could be inside the drill. Worn brushes, faulty wiring, or a damaged motor may require professional service.

1. Locate the nearest DeWalt service center, and then take the drill in for inspection.
2. If it is still under warranty, request a replacement or repair through DeWalt support.

Most DeWalt cordless drill issues are tied to the battery or safety lock, and they can be solved quickly at home. Only when those checks fail should you consider repairs or replacement.

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