Tough Knuckles Automotive
Electrical Diagnostics in Holland, OH
Some electrical problems hide. The light comes on, then goes off. The battery is dead on Monday but fine the rest of the week. These take a careful hunt, not a guess.
Some electrical problems hide. The light comes on, then goes off. The battery is dead on Monday but fine the rest of the week. These take a careful hunt, not a guess.
Diagnostics is where our shop shines. We use meters, scan tools, and wiring maps to find the fault for real. Then we tell you what it will take to fix it, with a free estimate.
Know the signs
Signs you might notice
- The battery is dead after the car sits for a day or two.
- A warning light blinks on and off with no clear pattern.
- A part works on a smooth road but quits over bumps.
- You hear relays clicking under the dash with the key off.
- The problem shows up only in rain or cold weather.
- Two or three unrelated things act up at the same time.
What's behind it
Common causes
- A part that keeps drawing power after the car is shut off.
- A wire that is almost broken and only touches when the car moves.
- Water getting into a connector and bridging two pins.
- A module or computer that will not go to sleep.
- A bad add-on part like an alarm or a dash cam wired in wrong.
How it works
How we handle it
We talk with you about when and how the problem happens, since timing is a big clue.
We hook up a scan tool to read stored codes from every computer on the car.
We measure current draw and voltage drop to find the circuit that is at fault.
We narrow it to one part or wire, then give you a written estimate to repair it.
What we check
- Parasitic draw, meaning power used while the car is off.
- Voltage drop across cables, grounds, and switches.
- Stored and pending trouble codes in all modules.
- Connectors and grounds that react when wiggled or flexed.
- Any add-on electronics and how they were wired.
Why this matters
A problem that comes and goes almost always gets worse. The wire frays a little more. The rust spreads. What starts as a rare dead battery can become a car that will not start at all. A real diagnosis now points the repair at the true cause instead of wasting money on parts you do not need.
Frequently asked questions
What is a parasitic draw?
Why not just replace parts until it works?
Can you always find the problem the same day?
Will the diagnosis cost me?
Is a warranty included?
Do I bring the car to Holland?
Reviews
Electrical Diagnostics customers, in their words
"Reasonable price. Did a wonderful job on putting a starter on the truck. They are very pleasant people to talk with and very helpful."
"These people are super legit - I normally don't leave reviews but Corey and Ashley did me such a huge service fixing my..."
"Great price. Cory is an amazing mechanic and handled my fiancée's car with care! Him and his wife are super nice and super friendly...."
Visit the Shop
Where to Bring Your Car for Electrical Diagnostics
All work is done at our shop. Drop-off is easy, and there's a key drop for early or after-hours.
- Address
- Address 932 Holland Park Blvd
Holland, OH 43528 - Hours
- Hours Monday-Friday, 9 AM-6 PM
Closed weekends
Drop-off shop in Holland. Call first and we will help you plan the visit.
Ready when you are
Tell Us What Your Car Is Doing
We will test it, give you a free estimate, and only start once you say go. No pressure, no jargon.
Not sure what it needs? That is okay. Describe the symptoms and we will help you figure out the next step.
30+ years of automotive experience · Family-owned · Free estimates · 15% military discount