423-401-0588 🔧 8307 Dayton Pike

Keeney Auto & Diesel

Keeney Auto & DieselKeeney Auto & DieselKeeney Auto & Diesel

Keeney Auto & Diesel

Keeney Auto & DieselKeeney Auto & DieselKeeney Auto & Diesel
  • Home
  • Auto Services
    • Specialty & Diagnostics
    • Auto-Electric Diagnostics
    • Module Programming/Coding
    • Advanced Programming
    • Light-Duty Diesel Service
    • NVH Diagnostics
    • Pre 1996 Diagnostics
    • Classic Car Repair
    • Performance & Aftermarket
    • Fluid & Maintenance
  • Contact & Estimates
  • Vehicle Issues Solved
    • Battery Dies Overnight
    • Cranks, but Won't Start
    • Intermittent No Crank
    • Starts Then Stalls
    • Fuses Keep Blowing
    • RPM or Idle Fluctuates
    • Lights Flicker Randomly
    • Fuel Pump Has No Power
    • Warning Lights On
    • Cooling Fans Stay On
    • New Alt—Still No Charging
    • Startup Makes Noise
  • About
  • Sportbike Suspension
  • Reviews & Social
  • Project Gallery
  • Training
  • Blog
  • Careers
  • More
    • Home
    • Auto Services
      • Specialty & Diagnostics
      • Auto-Electric Diagnostics
      • Module Programming/Coding
      • Advanced Programming
      • Light-Duty Diesel Service
      • NVH Diagnostics
      • Pre 1996 Diagnostics
      • Classic Car Repair
      • Performance & Aftermarket
      • Fluid & Maintenance
    • Contact & Estimates
    • Vehicle Issues Solved
      • Battery Dies Overnight
      • Cranks, but Won't Start
      • Intermittent No Crank
      • Starts Then Stalls
      • Fuses Keep Blowing
      • RPM or Idle Fluctuates
      • Lights Flicker Randomly
      • Fuel Pump Has No Power
      • Warning Lights On
      • Cooling Fans Stay On
      • New Alt—Still No Charging
      • Startup Makes Noise
    • About
    • Sportbike Suspension
    • Reviews & Social
    • Project Gallery
    • Training
    • Blog
    • Careers
  • Sign In

  • My Account
  • Signed in as:

  • filler@godaddy.com


  • My Account
  • Sign out

Signed in as:

filler@godaddy.com

  • Home
  • Auto Services
    • Specialty & Diagnostics
    • Auto-Electric Diagnostics
    • Module Programming/Coding
    • Advanced Programming
    • Light-Duty Diesel Service
    • NVH Diagnostics
    • Pre 1996 Diagnostics
    • Classic Car Repair
    • Performance & Aftermarket
    • Fluid & Maintenance
  • Contact & Estimates
  • Vehicle Issues Solved
    • Battery Dies Overnight
    • Cranks, but Won't Start
    • Intermittent No Crank
    • Starts Then Stalls
    • Fuses Keep Blowing
    • RPM or Idle Fluctuates
    • Lights Flicker Randomly
    • Fuel Pump Has No Power
    • Warning Lights On
    • Cooling Fans Stay On
    • New Alt—Still No Charging
    • Startup Makes Noise
  • About
  • Sportbike Suspension
  • Reviews & Social
  • Project Gallery
  • Training
  • Blog
  • Careers

Account

  • My Account
  • Sign out

  • Sign In
  • My Account

🚨 Warning Lights, No Cause

Warning Lights On? It’s Not Just About Codes.

Whether it's the ABS, traction control, battery, or check engine light — modern vehicles throw warning lights for a reason.  Though, pulling a code isn’t the same as fixing the root cause. 


A dashboard full of warning lights with no clear issue isn’t just frustrating—it’s a sign something deeper is going on.  Whether it's a ghost ABS light, a phantom check engine, or multiple modules showing communication faults, the problem often isn't where the lights point.


At Keeney Auto & Diesel, electrical diagnostics aren’t done by code-readers and guesses.  Each warning is interpreted with context, verified through wiring diagrams, network scans, and real-time data interpretation.  Module grounds, voltage offsets, and intermittent signal loss are traced under real-world load.


This isn’t guessing based on codes—it’s root cause isolation at the circuit level. If your warning lights don’t match the symptoms, or worse, come and go randomly, you’re in the right place.

Instrument cluster showing all warning lights and bulb check active

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

  • CAN/LIN network communication 
  • Control module fault history 
  • Sensor outputs (live, scoped) 
  • Intermittent voltage or signal losses

Tools Matter, So Does the Person Using Them.

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

A basic scanner only tells you so much.  We use oscilloscopes, thermal imaging, and direct-pin testing to confirm failures — not guess them. 

Located in Soddy-Daisy. Trusted Across Chattanooga.

Vehicle Warning Lights vs. What We Find – Soddy-Daisy Diagnostics

Located in Soddy-Daisy. Trusted Across Chattanooga.

Some clients come straight to us.  Others are referred after parts-swapping didn’t work.  Either way, it’s not fixed until it’s verified — that’s the standard. 

Keeney Auto & Diesel, LLC

Est. 2023

This website uses cookies.

 

accept