The Kubota KX080-4S is a robust mid-size excavator designed for demanding construction and earthmoving applications. Its instrument cluster provides operators with critical information to ensure both machine performance and safety in tough jobsite conditions.
Kubota Excavator KX080-4S Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A major system fault has been detected that could cause severe damage or unsafe operation of the KX080-4S. | Safely stop the excavator and investigate the source of the warning immediately. | |
| Master Caution | AMBER | The KX080-4S has registered a system issue that needs attention but is not yet critical. | Review the display for details and address the caution as soon as possible. | |
| Check Engine (MIL) | AMBER | The engine control system has detected a fault affecting the KX080-4S engine performance or emissions. | Inspect for engine trouble codes and schedule service if the light remains on. | |
| Engine Oil Pressure | RED | Engine oil pressure has dropped below safe limits, risking severe engine damage. | Shut down the engine immediately and check oil level and for possible leaks. | |
| Battery / Charging | RED | The charging system is not supplying power to the battery on your KX080-4S. | Stop operation and inspect the alternator, belt, and battery connections. | |
| Coolant Temperature | RED | Engine coolant temperature has reached a dangerously high level. | Turn off the engine and allow it to cool; check coolant level and radiator. | |
| Parking Brake | RED | The parking brake is engaged, preventing movement of the KX080-4S. | Release the parking brake before attempting to drive. | |
| Glow Plug / Preheat | AMBER | The preheat system is active to assist cold starting of the engine. | Wait for the light to turn off before starting the engine in cold conditions. | |
| DPF / Regeneration | AMBER | The Diesel Particulate Filter is undergoing regeneration to burn off soot. | Keep the engine running at proper RPM until the regeneration process completes. | |
| DEF / AdBlue | AMBER | DEF fluid level is low, which may affect emissions compliance and engine power. | Refill the DEF tank with the correct fluid at your next opportunity. | |
| Water in Fuel | AMBER | Water contamination has been detected in the KX080-4S fuel system. | Drain the water separator and check fuel quality promptly. | |
| Low Fuel | AMBER | Fuel level is approaching empty; risk of engine shutdown is imminent. | Refuel the KX080-4S as soon as possible to avoid stalling. | |
| Hydraulic System | AMBER | A hydraulic fault or abnormal pressure has been detected. | Inspect hydraulic fluid level and check for leaks or system errors. | |
| Hydraulic Oil | AMBER | Hydraulic oil temperature or level is outside normal range. | Check hydraulic oil level and condition; top up or replace if needed. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter is clogged or water separator needs servicing. | Replace the fuel filter and drain the water separator as soon as possible. | |
| Service / Hour Meter | AMBER | Scheduled maintenance is due based on engine hours logged. | Perform the recommended service or inspection for the current hour interval. | |
| Work Lights | GREEN | Work lights are switched on to illuminate the jobsite. | No action needed unless lights are not required. | |
| Beacon / Rotating Light | AMBER | The safety beacon is activated to alert others of machine operation. | Ensure beacon is functioning in areas where required. | |
| Swing / Slew Lock | AMBER | Swing lock is engaged, restricting upper structure rotation. | Disengage swing lock before rotating the cab. | |
| Overload / Capacity | RED | The excavator is operating beyond its rated lifting capacity. | Cease lifting operation and reduce the load immediately. | |
| High Exhaust Temp (HEST) | AMBER | Exhaust temperature is elevated, usually during active DPF regeneration. | Keep clear of exhaust outlet and allow regeneration to finish. |
21 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant level
- Radiator blockage
- Failed cooling fan
What to do
Shut down the KX080-4S, check coolant level and radiator for debris, and inspect the cooling fan operation before restarting.
Low Engine Oil Pressure
Common causes
- Insufficient engine oil
- Oil pump failure
- Oil leak
What to do
Immediately turn off the engine, verify oil level, and inspect for leaks; do not restart until the issue is resolved.
Hydraulic System Fault
Common causes
- Low hydraulic fluid
- Hydraulic hose leak
- Faulty hydraulic pump
What to do
Check and refill hydraulic fluid as needed, inspect hoses for damage, and consult a Kubota technician if the fault persists.
DPF Regeneration Failure
Common causes
- Interrupted regen cycle
- Sensor malfunction
- Excessive soot accumulation
What to do
Follow the on-screen prompts to perform a parked regeneration or contact service if regeneration cannot be completed.
Frequently Asked Questions
What should I do if the DPF regeneration light stays on?
Keep the engine running at the recommended RPM and follow the cluster instructions; if the light does not turn off, initiate a parked regeneration or call for service.
Can I operate the KX080-4S with the master caution light on?
You may continue to operate briefly, but check the display for details and address the issue as soon as possible to prevent escalation.
Why does the water in fuel light come on after refueling?
This can indicate contaminated fuel; drain the water separator and ensure your fuel source is clean.
How do I reset the service/hour meter reminder?
After completing scheduled maintenance, follow the operator’s manual procedure to reset the service reminder via the cluster buttons.
Is it safe to ignore the hydraulic oil warning if performance feels normal?
No, always inspect the hydraulic system as soon as the warning appears, as internal damage or overheating may not be immediately noticeable.