Cadillac Dashboard Warning Light Guide
Essential information for driving through Tempe and the Phoenix Valley.
What do the dashboard lights on my Cadillac mean?
Dashboard lights on your Cadillac alert you to important vehicle conditions:
- Check Engine: Engine or emission issues—diagnose promptly.
- Low Oil Pressure: Engine lubrication is low—stop driving if lit.
- Tire Pressure: Tires need air or sensor replacement.
- Engine Temperature: Engine overheating or low coolant—check immediately.
- Low Fuel: Refuel soon to avoid running out.
Understanding these symbols helps you maintain safety and reliability. For professional assistance or service, visit Coulter Cadillac Tempe.
Red: Action Required
Stop immediately. This indicates a serious safety issue or potential engine failure. Pull over safely and call Coulter Cadillac Tempe for a tow.
Yellow/Amber: Caution
Inspect soon. Something needs maintenance or repair. You can usually continue driving, but the issue should be diagnosed by our Tempe service center today.
Blue/Green: Info
System On. This is simply a notification that a feature (like High Beams or Cruise Control) is currently active.
Your Cadillac Escalade, XT5, or CT5 is equipped with advanced diagnostics to protect your investment. Below are the most common symbols you'll see while driving near ASU or commuting on the I-10.
Check Engine Light (Amber)
The "Malfunction Indicator Lamp" signifies an issue with the engine control or emissions system.
Tempe Pro-Tip: In Arizona, a common cause for this light is a gas cap that has expanded or cracked due to the extreme heat, preventing a tight seal. Try tightening your gas cap first; if the light remains on after 24 hours, schedule a diagnostic immediately.
Low Oil Pressure (Red)
This is a critical warning. It means your Cadillac’s engine is not receiving enough lubrication. Driving even a few miles with this light on can lead to total engine seizure.
What to do: Pull over immediately on the nearest shoulder and check your oil levels or call for assistance.
Tire Pressure Warning (TPMS)
In the Tempe/Phoenix valley, we see this light constantly during seasonal transitions. A 10-degree drop in overnight temperature can trigger your TPMS light. However, if the light flashes, it indicates a sensor failure.
What to do: Ensure your tires are set to the PSI listed on your driver-side door jamb.
Engine Temperature Warning (Red)
This symbol represents a thermometer submerged in fluid and is arguably the most dangerous light for Arizona drivers. If this illuminates, your engine is overheating.
What to do: Immediately turn off your air conditioning and pull over safely. Driving an overheating Cadillac in 110-degree Tempe heat for even a few minutes can warp engine components or blow a head gasket. Check for visible steam or coolant leaks under the front of the vehicle. If you've been sitting in heavy traffic on the US-60 or Broadway Rd, your cooling fans or radiator may need immediate attention at our Autoplex Loop facility.
Low Fuel Light (Amber)
This light resembles a gas station pump. It illuminates when your fuel level has reached its reserve capacity (typically 1–3 gallons remaining depending on your specific Cadillac model like the XT6 or Escalade).
Technical Insight: While it’s tempting to "push it" to the next station, we recommend refueling immediately. In hot climates like ours, the fuel in your tank actually acts as a coolant for the fuel pump. Consistently running your Cadillac on empty during a hot Tempe summer can cause the fuel pump to overheat and fail prematurely. Don't risk a breakdown in the middle of Price Road—refuel as soon as you see the amber glow.
The "Hidden" Symbols
Modern Cadillacs like the all-electric LYRIQ or the Escalade-V feature dozens of additional digital indicators, including Lane Keep Assist, Super Cruise status, and Regenerative Braking icons. If you see a symbol not listed here, your digital owner's manual (accessible via your Cadillac User Experience screen) provides a search function to identify it instantly, or contact the team at Coulter Cadillac Tempe.
