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Johnny's AutomotiveJohnny's Automotive
Lake Wales, FL

Computer Diagnostics at our Lake Wales shop

Bring it to our Lake Wales shop and we'll handle the computer diagnostics. Here's where to find us, when we're open, and how to book a time.

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Lake Wales, FL323 North Scenic HighwayBook a time online
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Where to find our Lake Wales shop

Address, hours, and directions for the shop that handles your computer diagnostics.

Address

323 North Scenic Highway
Lake Wales, FL 33853

Shop phone

(863) 676-3858

Hours

Monday
7:30 AM to 5:30 PM
Tuesday
7:30 AM to 5:30 PM
Wednesday
7:30 AM to 5:30 PM
Thursday
7:30 AM to 5:30 PM
Friday
7:30 AM to 5:30 PM
Saturday
Closed
Sunday
Closed
Options

Computer Diagnostics options in Lake Wales

Choose the right computer diagnostics service for your needs.

Check Engine Light

Check engine light on? We pinpoint the exact cause with advanced diagnostics and provide clear repair options — no guesswork.

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Pre-Purchase Inspection

Buying a used car? Our thorough multi-point inspection uncovers hidden problems so you can buy with confidence.

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Vehicle Inspection

Vehicle Inspection evaluates relevant vehicle systems and documents findings for repair planning.

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No Start Diagnosis

No Start Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Electrical Diagnosis

Electrical Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Charging System Diagnosis

Charging System Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Overheating Diagnosis

Overheating Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Brake Noise Diagnosis

Brake Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Suspension Noise Diagnosis

Suspension Noise Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Steering Problem Diagnosis

Steering Problem Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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AC Diagnosis

AC Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Vibration Diagnosis

Vibration Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Fluid Leak Diagnosis

Fluid Leak Diagnosis evaluates relevant vehicle systems and documents findings for repair planning.

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Recent Computer Diagnostics Work in Lake Wales

Real jobs completed by our team in the Lake Wales area

Our team

Our Team

September 2026

What Does a Pre-Purchase Inspection Include?

What the customer reported

The vehicle owner wanted a thorough assessment before purchasing a used car.

What we found and did

The technician conducted a comprehensive digital inspection to evaluate the vehicle's condition. The team at our Lake Wales shop performed a Digital Inspection Extreme, which included a wheels-off inspection to check critical components and overall vehicle health. This detailed evaluation provided the vehicle owner with essential insights into the car's current state.

Result

The inspection results helped the vehicle owner make an informed decision about their potential purchase.

Pro Tip

A pre-purchase inspection can reveal hidden issues that aren't obvious during a test drive. Investing in this service can save you from costly repairs down the road.

Our team

Our Team

September 2026

Why Are My ABS and Parking Brake Lights On?

What the customer reported

The vehicle owner noticed that the Check Engine Light, ABS, and Parking Brake Warning lights were illuminated on their dashboard.

What we found and did

The technician identified the ABS wheel speed sensor on the passenger front side as the initial point of concern, suggesting further testing might be needed. The team replaced the faulty ABS wheel speed sensor on the passenger front side. Additionally, they performed a BG Brake Fluid Service to replace the dark and moisture-laden fluid, ensuring the system was flushed and refilled with fresh fluid. A complete coolant system flush was also conducted to address the acidic coolant, protecting the water pump, radiator, and thermostat.

Result

After the repairs and services, the warning lights were cleared, and the vehicle was road-tested to confirm the issues were resolved.

Pro Tip

ABS warning lights can indicate sensor issues or fluid problems. Addressing them promptly prevents further system damage and ensures safe braking performance.

Our team

Our Team

September 2026

Why Is My Check Engine Light Still On After a Repair?

What the customer reported

The vehicle owner reported a check engine light and a clunk in the passenger front tire.

What we found and did

The technician found issues with the catalytic converter and the purge valve/solenoid, which were causing the check engine light to illuminate. The team replaced the catalytic converter with sensors and installed a new Die Hard AGM Auxiliary Battery along with an AGM Platinum Battery. They also addressed the purge valve/solenoid issue by replacing the necessary components.

Result

The repairs addressed the primary causes of the check engine light, though further testing was recommended to ensure no other components were affected.

Pro Tip

A check engine light can signal multiple issues. If it stays on after a repair, further diagnostics may be needed to check for other system failures.

Our team

Our Team

September 2026

What Caused the Check Engine Light to Stay On?

What the customer reported

The vehicle owner noticed that the check engine light was on. Another shop had indicated a crankshaft-related issue, even though the crankshaft was recently replaced.

What we found and did

The technician found that the problem was related to the crankshaft position sensor rather than the crankshaft itself. The team at our Lake Wales shop removed and replaced the faulty crankshaft position sensor. They performed necessary tests to ensure the new sensor was functioning correctly and conducted a final road test to verify the repair.

Result

The check engine light was successfully turned off, and the vehicle was running smoothly.

Pro Tip

A check engine light related to the crankshaft position sensor can often be resolved by replacing the sensor itself. If your light comes on after recent repairs, a follow-up check might save you from unnecessary part replacements.

FAQ

Computer Diagnostics in Lake Wales: questions answered

Answered by our licensed technicians serving Lake Wales.

Why do you charge for diagnosis when the parts store reads codes for free?

Because they're two different things. Reading a code takes a few seconds and tells you which system reported a fault. Finding the cause takes a technician, a lift, live data, and testing to prove which part in that system actually failed. That's the work you're paying for, and it's the part that keeps you from buying components that don't fix the car. Bring us the code you already have. It gives us a head start.

Does the diagnostic fee go toward the repair if I have you do the work?

That depends on the job, and the service advisor will lay it out at the counter before anything starts, so there are no surprises on the invoice. The bigger point is what the fee gets you either way: a confirmed cause with photos, and a quote based on the actual problem instead of a guess. Ask us when you drop the car off and we'll tell you exactly how it works for your repair.

How long does diagnosis take?

It depends on the symptom. Something that's failing right now in front of the technician can be pinned down quickly. An intermittent problem, a wiring fault, or a noise that only shows up cold takes longer, because we have to recreate the condition before we can test anything. We'll give you a time estimate up front and call you if what we find changes it. We'd rather tell you it's going to take a while than hand you a fast answer that's wrong.

What if you can't find the problem?

We'll tell you that plainly instead of picking a part and hoping. Usually it means the fault is intermittent and hasn't shown itself yet, and the next step is either leaving the car with us longer or bringing it back when the symptom is happening. You'll get everything we ruled out and how we ruled it out, which is real information even when it isn't the answer you wanted. If a job is beyond what we can test here, we'll say so rather than run up your bill.

Can you diagnose something another shop already worked on?

Yes, and we get that call a lot. We start from the car in front of us rather than from what's already been replaced, because assuming an earlier repair was right is how the same wrong answer gets repeated. Bring your paperwork if you have it. Knowing what's already been done and what changed afterward is genuinely useful. You'll get the same thing anyone else gets: a named cause, photos, and a quote, and no pressure about where you have the work done.

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20+ Years

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