The Doosan/Develon DX35-5 compact excavator features a digital instrument cluster that provides critical machine status and warnings. Understanding these symbols helps prevent downtime and ensures safe operation on tight job sites.
Doosan/Develon DX35-5 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical failure detected—stop the engine immediately to avoid major damage on your DX35-5. | Shut down engine, consult manual, contact dealer. | |
| Master Caution | AMBER | A non-critical fault has been registered; the DX35-5 can continue operation but check the cluster for details. | Check other warning lights, service soon. | |
| Check Engine (MIL) | AMBER | Emission or engine management issue detected in the DX35-5’s Kubota diesel; may reduce power. | Have engine diagnosed; reduce load if power loss. | |
| Engine Oil Pressure | RED | Oil pressure below safe level—stop engine immediately to protect the DX35-5’s engine. | Check oil level, inspect for leaks, call for service. | |
| Battery / Charging | RED | Charging system malfunction; the DX35-5 may stall if battery is depleted. | Check alternator belt and connections, charge battery. | |
| Coolant Temperature | RED | Engine overheating—stop the DX35-5 and let it cool to prevent warped heads. | Turn off engine, check coolant level and radiator fins. | |
| Hydraulic System | RED | Hydraulic fault detected (e.g., overheat or low pressure)—stop excavator operation. | Check hydraulic oil level and temperature, inspect for leaks. | |
| Air Filter | AMBER | Restricted air intake; clean or replace air filter to maintain DX35-5 engine performance. | Inspect and replace air filter element. | |
| Fuel Filter / Water Separator | AMBER | Water in fuel or clogged filter—drain water separator and replace filter on your DX35-5. | Drain water separator, replace fuel filter. | |
| Glow Plug / Preheat | AMBER | Glow plug system active or fault; wait for light to turn off before starting in cold weather. | If stays on, have glow plugs checked. | |
| DPF / Regeneration | AMBER | Diesel particulate filter needs regeneration—run engine at high idle to clean DPF. | Perform parked regen as per manual. | |
| Low Fuel | AMBER | Fuel level low; refill soon to avoid air in the DX35-5 fuel system. | Add diesel fuel. | |
| Seat Belt | RED | Seat belt not fastened; the DX35-5 requires belt engagement for safe operation. | Engage seat belt; light goes off when latched. | |
| Work Lights | GREEN | Work lights are on, providing illumination for night excavator operation. | Turn off when not needed to save battery. | |
| Beacon / Rotating Light | GREEN | Rotating amber beacon activated—indicates the DX35-5 is in motion or working. | Ensure beacon is visible to surrounding workers. | |
| Swing / Slew Lock | AMBER | Swing lock engaged—upper structure cannot rotate; release before slewing. | Disengage swing lock to allow rotation. | |
| Service / Hour Meter | AMBER | Scheduled maintenance interval reached for the DX35-5; perform service soon. | Refer to manual for required service items. |
17 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
- Clogged radiator
- Faulty cooling fan
What to do
Stop engine immediately, allow to cool, check coolant level and radiator fins for debris on the DX35-5.
Low Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Worn bearings
What to do
Shut down engine, check oil level with dipstick; if low, top up and check for leaks; if persists, contact dealer.
Hydraulic System Overheat
Common causes
- Low hydraulic oil
- Dirty oil cooler
- Continuous heavy load
What to do
Reduce load, let system cool, check hydraulic oil level and clean oil cooler fins on the DX35-5.
Charging System Failure
Common causes
- Loose/broken alternator belt
- Failed alternator
- Battery terminal corrosion
What to do
Inspect belt tension and condition, check battery connections, if light remains replace alternator.
Water in Fuel
Common causes
- Contaminated fuel
- Failed water separator seal
- Condensation in tank
What to do
Open water separator drain valve until clean fuel flows; replace fuel filter if needed.
Frequently Asked Questions
Why does the master warning light come on but no other warnings?
The DX35-5 uses a master warning for any critical fault; check the display for a specific error code or contact your dealer for diagnostics.
How do I perform a DPF regeneration on the DX35-5?
Park the excavator on level ground, engage parking brake, and press the regen switch (if equipped) or run engine at high idle until the light turns off.
The glow plug light stays on after starting—what does it mean?
If the glow plug light remains on after the engine starts, it indicates a fault in the preheat system; have it checked to ensure cold starting reliability.
Can I operate the excavator with the swing lock light on?
No, the swing lock prevents upper structure rotation; release the lock before operating to avoid mechanical damage.
What does the hydraulic system warning indicate?
It signals low hydraulic oil level, high temperature, or a system fault; stop work, check oil level and cooler, and if persists, consult a technician.
How often should I service the air filter?
Inspect the air filter daily; replace when the indicator shows restriction or every 500 hours, whichever comes first, for dusty conditions.