2020 Kia Telluride Hard Brake Pedal Diagnosis: No Power Assist Explained Introduction A hard brake pedal is one of those issues that immediately gets your attention—and for good reason. When a vehicle suddenly feels like it has no brake assist , it can be both dangerous and confusing to diagnose, especially on newer vehicles where systems aren’t always what they seem at first glance. In this case, I was working on a 2020 Kia Telluride that came in with exactly that complaint: very stiff brake pedal, almost like manual brakes . What followed was a great reminder of why proper diagnosis—and not assumptions—is everything. Vehicle Concern The customer reported: Brake pedal extremely stiff Requires excessive force to stop Feels like there is no power assist at all No prior brake work had been done, and the issue appeared suddenly. Initial Inspection & Symptoms First thing I did was a basic check under the hood. At a glance, I initially suspected an electronic brake booster system...
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2015 Ford Explorer ABS Light On: Diagnosing a Right Rear Wheel Speed Sensor Code (C003A) Introduction ABS and traction control issues can be frustrating, especially when the problem seems straightforward—like a wheel speed sensor code—but keeps coming back. In this case, I worked on a 2015 Ford Explorer with an ABS warning and a stored fault pointing to the right rear wheel speed sensor. What looked like a simple sensor issue turned into a deeper diagnostic process that highlights why proper testing always beats guesswork. Let’s walk through how I approached it and what actually fixed the problem. Vehicle Concern The vehicle is a 2015 Ford Explorer 3.5L . The customer complaint was: ABS light illuminated Traction control light on Intermittent stability control warnings The vehicle still drove fine, but the warning lights were persistent. Initial Inspection & Symptoms First thing I always do is verify the concern: Lights were on as described No obvious drivability issues No ab...
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2020 Jeep Gladiator Check Engine Light with No P-Codes: Diagnosing a Hidden Brake Light Fault Introduction Every now and then, you run into a vehicle that throws you a curveball—something that doesn’t quite add up at first glance. This case involved a 2020 Jeep Gladiator that came in with a check engine light on , but no obvious powertrain codes to explain it. At first, it looked like a classic network issue with multiple U-codes. But after clearing everything and starting fresh, the real problem revealed itself—and it wasn’t where most people would expect. Vehicle Concern Vehicle: 2020 Jeep Gladiator Complaint: Check engine light illuminated Customer concern: Recently came on, no noticeable drivability issues Initial Inspection & Symptoms When I first scanned the vehicle, there were multiple U-codes across several modules , mostly related to lost communication with the ABS system. That typically points you toward: CAN bus issues Voltage problems Module failures But here’...
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2017 Jeep Renegade “Bulb Out” Warning Light – Step-by-Step Diagnosis and Fix Introduction A “bulb out” warning might seem like a minor annoyance, but on modern vehicles like the 2017 Jeep Renegade, it can point to more than just a burned-out light. These systems are monitored electronically, and even small changes in resistance can trigger warnings. In this case, the driver noticed the exterior lamp failure indicator on the dash and wanted to confirm exactly what it meant—and more importantly, how to track it down efficiently. Let’s walk through how I approached diagnosing this issue and what you should look for if you run into the same problem. Vehicle Concern The vehicle is a 2017 Jeep Renegade with a warning light illuminated on the instrument cluster. The icon displayed is the exterior lamp failure indicator (a light bulb symbol with rays around it). No other warning lights were present, and the vehicle otherwise operated normally. Initial Inspection & Symptoms When I s...
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2023 Kia Seltos Radio Glitching with No Codes: Diagnostic Walkthrough & What It Really Means Introduction Every technician runs into this scenario eventually: a vehicle comes in with a clear customer complaint, but the scan tool shows absolutely nothing. No codes, no obvious faults—just a system that isn’t behaving the way it should. In this case, we’re dealing with a 2023 Kia Seltos with a glitchy infotainment system. The customer reports erratic behavior from the radio, but the vehicle is still under warranty. That combination makes this a great real-world example of how to approach modern electronics diagnostics—and when to stop and let the dealer handle it. Vehicle Concern The customer complaint was straightforward: Radio system is glitchy and unreliable General concern that the entire infotainment system isn’t operating correctly No mention of warning lights, no drivability concerns—just an issue isolated to the radio/infotainment system. Initial Inspection & Symptom...
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2017 Jeep Wrangler No Heat Diagnosis: Blend Door Failure Case Study Introduction A lack of heat in a vehicle—especially when the engine is reaching normal operating temperature—can be frustrating and misleading. Many technicians immediately suspect a clogged heater core or cooling system issue. But sometimes, the problem lies deeper inside the HVAC system. In this case study, I walk through a real-world diagnosis on a 2017 Jeep Wrangler with no heat output, despite proper coolant flow. This is a common issue on these vehicles, and understanding the diagnostic approach can save hours of guesswork. Vehicle Concern Vehicle: 2017 Jeep Wrangler (JK) Complaint: No heat from vents Customer Observation: Air blows normally, but stays cold regardless of temperature setting Initial Inspection & Symptoms I always start with the basics before diving into deeper diagnostics. Here’s what I verified right away: Engine reaches normal operating temperature No overheating or cooling system f...
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2020 Mitsubishi Outlander Touchscreen Not Working? Step-by-Step Diagnosis and Fix Introduction One of the more frustrating issues I see in modern vehicles is when the infotainment screen looks perfectly fine—but won’t respond to touch at all. That’s exactly what came up with this 2020 Mitsubishi Outlander. The display was clear, radio worked, and everything looked normal… but no matter where you touched the screen, nothing happened. Let’s walk through how I diagnosed it and what the real fix ended up being. Vehicle Concern Customer complaint: Touchscreen completely unresponsive Display functions normally (radio, menus visible) No visible damage to the screen Issue occurred suddenly This vehicle is equipped with Mitsubishi’s SDA (Smartphone Display Audio) system. Initial Inspection & Symptoms First thing I always do is verify the concern myself. Ignition on → radio boots normally FM radio playing → audio works fine Screen display → clear and responsive visually Touch input → ...