The Hitachi ZX245USLC-6 is a mid-sized, reduced-tail-swing hydraulic excavator designed for tight job sites and heavy-duty performance. Its advanced instrument cluster provides real-time feedback on machine status and critical systems, helping operators stay informed and maintain uptime.
Hitachi ZX245USLC-6 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical failure or unsafe condition has been detected in your ZX245USLC-6, such as severe engine or hydraulic issues. | Stop the machine immediately and investigate the warning source using the monitor panel. | |
| Master Caution | AMBER | A non-critical abnormality or system malfunction is present, but operation may continue with caution. | Check the display for further details and address the indicated issue soon. | |
| Check Engine (MIL) | AMBER | The engine control unit has detected a malfunction affecting performance or emissions on your ZX245USLC-6. | Refer to the diagnostic code on the monitor and arrange for service if the issue persists. | |
| Engine Oil Pressure | RED | Engine oil pressure has dropped below safe levels, risking severe engine damage. | Shut down the engine immediately; check oil level and look for leaks. | |
| Battery / Charging | RED | The charging system is not maintaining battery voltage, possibly due to alternator or belt issues. | Stop operation when safe; inspect alternator, connections, and battery. | |
| Coolant Temperature | RED | Coolant temperature is excessively high, indicating possible engine overheating. | Idle or shut down the engine to cool; check coolant level and radiator. | |
| Hydraulic System | RED | A major hydraulic system fault or dangerously low hydraulic oil level has been detected. | Stop the machine and inspect for leaks or low hydraulic oil. | |
| Hydraulic Oil | AMBER | Hydraulic oil temperature is above the recommended range or oil level is low. | Let the system cool and check hydraulic fluid level. | |
| Low Fuel | AMBER | Fuel level is approaching empty; continued operation may lead to stalling. | Refuel at the next opportunity to avoid downtime. | |
| DEF / AdBlue | AMBER | The diesel exhaust fluid (DEF) level is low, risking reduced engine performance or shutdown. | Top up the DEF tank to maintain emissions compliance. | |
| DPF / Regeneration | AMBER | The diesel particulate filter requires regeneration to burn off accumulated soot. | Initiate or allow automatic regeneration as prompted by the monitor. | |
| Water in Fuel | AMBER | Water has been detected in the fuel system, risking injector or pump damage. | Drain the water separator as soon as possible. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter is clogged or the water separator needs attention. | Replace the filter or drain water from the separator. | |
| Engine Oil Temperature | RED | Engine oil temperature has exceeded safe limits, endangering engine components. | Idle or stop the engine and check for cooling or lubrication issues. | |
| Air Filter | AMBER | The air filter is restricted, reducing engine efficiency and risking damage. | Clean or replace the air filter element. | |
| Service / Hour Meter | AMBER | Scheduled maintenance interval has been reached based on machine hours. | Perform the recommended service as outlined in the operator’s manual. | |
| Parking Brake | RED | Parking brake is engaged, preventing machine movement. | Release the parking brake before attempting to travel. | |
| Work Lights | BLUE | Work lights are switched on to illuminate the job site. | No action needed unless lights are not required. | |
| Beacon / Rotating Light | AMBER | The rotating beacon is active to alert others of machine operation. | No action required unless beacon use is not needed. | |
| Swing / Slew Lock | AMBER | The swing lock is engaged, restricting upper structure rotation. | Disengage the swing lock to allow upper carriage movement. | |
| Overload / Capacity | RED | Lift load exceeds rated capacity, risking tip-over or structural damage. | Lower the load immediately and reassess lifting plan. | |
| Door Open | AMBER | A cab or access door is not fully closed, which may affect safety. | Secure all doors before resuming operation. |
22 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Low engine oil level
- Oil pump failure
- Blocked oil passages
What to do
Immediately stop the ZX245USLC-6 engine, check the oil level and refill if necessary. If oil level is normal, contact a Hitachi technician to inspect for internal faults.
Hydraulic System
Common causes
- Major hydraulic leak
- Low hydraulic oil reservoir
- Pump or component failure
What to do
Stop machine movement, check for visible hydraulic leaks, and inspect reservoir level. Refill with approved hydraulic oil and repair leaks before restarting.
Coolant Temperature
Common causes
- Low coolant level
- Radiator blockage
- Faulty thermostat or water pump
What to do
Shut down the engine and allow it to cool. Check coolant level, inspect the radiator for debris, and have a technician diagnose persistent overheating.
Overload / Capacity
Common causes
- Attempting to lift excessive weight
- Incorrect attachment use
- Unstable ground conditions
What to do
Lower the load immediately, verify load charts, and ensure the ZX245USLC-6 is on stable ground before resuming lifting operations.
Frequently Asked Questions
What should I do if the DEF/AdBlue warning light comes on?
Refill the DEF tank with the appropriate fluid as soon as possible to avoid engine derate or shutdown on the ZX245USLC-6.
How do I reset the service/hour meter indicator?
After performing scheduled maintenance, reset the hour meter through the monitor panel following the steps in the operator’s manual.
Why does the DPF regeneration light stay on?
The DPF light remains on until a full regeneration cycle is completed; follow on-screen prompts to perform or allow regeneration while the ZX245USLC-6 is running.
Can I operate if the air filter warning is illuminated?
Limited operation is possible but not recommended; clean or replace the air filter promptly to prevent reduced engine performance.
What does it mean if the swing lock light is on?
The upper structure swing is locked; disengage the swing lock lever to restore normal rotation on the ZX245USLC-6.