The Doosan/Develon DX63-3 is a compact excavator with a clear, intuitive instrument cluster that provides real-time machine status. All warning symbols are grouped in the LCD display for easy monitoring during operation.
Doosan/Develon DX63-3 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault is detected in the engine, hydraulic, or electrical system on your DX63-3; the engine may shut down automatically. | Stop the engine immediately and check the error code on the cluster; consult your DX63-3 service manual. | |
| Hydraulic Oil Temperature | AMBER | The hydraulic oil temperature in your DX63-3 is approaching the upper limit; extended operation may damage components. | Reduce load and allow the system to cool; check hydraulic oil level and radiator cleanliness. | |
| Engine Oil Pressure Low | RED | Engine oil pressure has dropped below safe operating range; internal engine damage is imminent if you continue running. | Stop the engine immediately and check oil level; inspect for leaks or pump issues. | |
| Battery Charging System | RED | The alternator is not charging the battery, or voltage is outside normal range; electrical functions may fail. | Check alternator belt tension and battery connections; replace alternator if necessary. | |
| Coolant Temperature High | RED | Engine coolant temperature has exceeded the safe limit; engine overheating can cause major damage. | Stop the engine and let it cool; check coolant level, radiator fins, and fan belt. | |
| Glow Plug / Preheat | AMBER | The glow plugs are preheating the engine for cold start; wait until the indicator turns off before cranking. | Turn the key to the preheat position and wait for the indicator to extinguish. | |
| Swing / Slew Lock | AMBER | The swing lock is engaged to prevent the upper structure from rotating; the excavator is in transport mode. | Release the swing lock before operating the excavator; check the lock indicator. | |
| Low Fuel | AMBER | Fuel level is low; refuel soon to avoid air entering the fuel system, which can cause hard starting. | Add diesel fuel to the tank; use clean, high-quality fuel. | |
| Check Engine (MIL) | AMBER | The engine control module has detected a fault; performance may be reduced to protect the engine. | Have the engine diagnostic codes read by a Doosan dealer; avoid heavy loads until repaired. | |
| Service / Hour Meter | AMBER | A scheduled maintenance interval is near or overdue; follow the DX63-3 service schedule. | Perform the required service as per the operator's manual; reset the timer after maintenance. | |
| Work Lights | GREEN | The work lights are turned on for increased visibility around the DX63-3. | No action needed; turn off when not needed to save battery. | |
| Seat Belt Reminder | AMBER | The seat belt is not fastened; the machine may have an interlock preventing operation. | Fasten the seat belt before operating the excavator. |
12 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheat
Common causes
- Low coolant level
- Blocked radiator fins
- Faulty thermostat
What to do
Stop the DX63-3 immediately; let the engine cool, then check coolant and clean the radiator. If persistent, have the cooling system inspected by a dealer.
Hydraulic System Overheating
Common causes
- Low hydraulic oil level
- Clogged hydraulic oil cooler
- Continuous heavy use
What to do
Reduce load and allow system to idle; check hydraulic oil level and clean the cooler fins. For severe cases, drain and replace the hydraulic oil.
Electrical System Failure
Common causes
- Loose battery connections
- Faulty alternator
- Blown fuse
What to do
Check battery terminals for corrosion and tighten connections; test alternator output; replace blown fuses as per the DX63-3 wiring diagram.
Engine Won't Start
Common causes
- Glow plug failure in cold weather
- Fuel system air or water contamination
- Dead battery
What to do
Ensure glow plugs function; prime the fuel system by bleeding air; charge or replace the battery. Verify the starter relay.
Frequently Asked Questions
Why does my DX63-3 show a master warning light and the engine shuts down?
This is a critical fault protection. Common causes include low engine oil pressure, high coolant temperature, or an electrical system failure. Check the cluster for a numeric error code and refer to the service manual before restarting.
How do I reset the service hour meter on the DX63-3?
The service interval light is typically reset by a dealer using diagnostic software. However, some models allow resetting via a sequence on the instrument cluster buttons. Consult your operator's manual for the specific procedure.
What does the amber hydraulic light mean?
It indicates that the hydraulic oil temperature is high. Reduce the workload and allow the machine to idle. Check the hydraulic oil level and ensure the oil cooler is free of debris.
Can I operate the excavator with the amber swing lock light on?
No, the swing lock must be disengaged before operating. The light indicates that the upper structure is locked; attempting to slew can damage the lock mechanism.
Why does the glow plug light stay on for a long time?
In very cold conditions, the glow plugs may require longer preheat time. If the light stays on for more than 30 seconds or fails to go out, there may be a faulty glow plug or relay. Have the system checked.
How often should I change the hydraulic oil in the DX63-3?
Develon recommends changing hydraulic oil every 2,000 hours or two years, whichever comes first. Always use approved hydraulic oil and replace the filter simultaneously.