The Doosan Forklift D25S-7 is a robust diesel-powered industrial forklift designed for intensive material handling in warehouses and yards. The instrument cluster provides operators with essential real-time alerts and system statuses to ensure optimal safety and performance. Understanding these indicators is crucial for maintaining the forklift's reliability and longevity.
Doosan Forklift D25S-7 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical malfunction or hazardous condition has been detected by the D25S-7's monitoring systems. | Safely stop operation and investigate the specific warning on the display. | |
| Check Engine (MIL) | AMBER | The engine control unit has identified a fault affecting the D25S-7’s emissions or performance. | Schedule diagnostic service to prevent further issues. | |
| Engine Oil Pressure | RED | The engine oil pressure has dropped below safe limits, risking severe damage to the D25S-7’s engine. | Shut down the engine immediately and check oil level and system. | |
| Battery / Charging | RED | The D25S-7’s alternator isn’t charging the battery properly, risking electrical failure. | Inspect the charging system and battery connections before resuming work. | |
| Coolant Temperature | RED | The engine coolant temperature has exceeded safe operating limits in the D25S-7. | Stop the forklift and allow the engine to cool; check coolant level. | |
| Transmission Temp | AMBER | The D25S-7’s transmission fluid is running hotter than normal. | Pause operation to let the transmission cool and check fluid levels. | |
| Brake System | RED | A fault has been detected in the D25S-7’s primary brake system. | Do not operate; inspect brake fluid and system components. | |
| Parking Brake | RED | The parking brake is engaged on the D25S-7. | Release the parking brake before driving. | |
| Seat Belt | AMBER | The operator’s seat belt is not fastened while the D25S-7 is running. | Securely fasten the seat belt before operating. | |
| Glow Plug / Preheat | AMBER | The engine preheat system is active to aid cold starting on the D25S-7. | Wait for the light to turn off before cranking the engine. | |
| DPF / Regeneration | AMBER | The diesel particulate filter is regenerating to clean exhaust emissions. | Allow the regeneration cycle to complete before shutting down. | |
| DEF / AdBlue | AMBER | The DEF (AdBlue) level is low, which can affect emissions control in the D25S-7. | Refill DEF tank soon to avoid power reduction. | |
| Water in Fuel | AMBER | The water separator has detected water in the D25S-7’s diesel fuel system. | Drain the water separator to prevent engine damage. | |
| Low Fuel | AMBER | The fuel level in the D25S-7 is nearing empty. | Refuel as soon as possible to avoid stalling. | |
| High Beam | BLUE | The high beam headlights are switched on for the D25S-7. | Switch off high beams when not needed for visibility. | |
| Hydraulic System | AMBER | A hydraulic system warning has been triggered, possibly due to low fluid or pressure. | Check hydraulic fluid level and inspect for leaks. | |
| Hydraulic Oil | AMBER | The hydraulic oil level or quality in the D25S-7 is insufficient for safe operation. | Top up or replace hydraulic oil as needed. | |
| Engine Oil Temperature | AMBER | The engine oil temperature is higher than normal in the D25S-7. | Pause operation and check for cooling or lubrication issues. | |
| Air Filter | AMBER | The air filter is clogged, restricting airflow to the D25S-7’s engine. | Inspect and replace the air filter if necessary. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter is blocked or water is present in the separator. | Replace the fuel filter and drain the separator. | |
| Service / Hour Meter | AMBER | The D25S-7 is due for scheduled maintenance based on engine hours. | Arrange for preventive maintenance service. | |
| Work Lights | GREEN | The work lights are active to improve visibility around the D25S-7. | Turn off work lights when not needed to conserve battery. | |
| Beacon / Rotating Light | AMBER | The warning beacon is operating to alert others of forklift movement. | Ensure beacon is functioning in busy or low-visibility areas. | |
| Overload / Capacity | RED | The D25S-7 has detected a load exceeding its safe lifting capacity. | Lower the load immediately and reassess weight. |
24 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Insufficient engine oil
- Oil pump failure
- Oil filter blockage
What to do
Stop the engine on the D25S-7 right away, check the oil level, and inspect for leaks or blockages before restarting.
Coolant Temperature
Common causes
- Low coolant level
- Radiator blockage
- Faulty thermostat
What to do
Let the engine cool, check coolant level, and inspect the radiator and hoses for obstructions or leaks specific to the D25S-7.
Brake System
Common causes
- Low brake fluid
- Worn brake pads or shoes
- Hydraulic brake line leak
What to do
Inspect the D25S-7’s brake fluid reservoir, look for leaks, and have the brake system serviced before use.
Overload / Capacity
Common causes
- Lifting load beyond rated capacity
- Incorrect load distribution
- Faulty load sensor
What to do
Reduce the load to within the D25S-7’s rated specifications and confirm load sensor function before resuming lifting.
Battery / Charging
Common causes
- Alternator failure
- Loose battery terminals
- Broken drive belt
What to do
Check the alternator, tighten terminals, and inspect the drive belt on the D25S-7 to restore proper charging.
Frequently Asked Questions
What should I do if the D25S-7 shows the DPF regeneration light?
Keep the engine running and avoid shutting down until the regeneration process completes; consult the manual if the light stays on.
How often should I check the hydraulic oil level on the D25S-7?
Check the hydraulic oil level daily before starting work to prevent system damage.
Why does the seat belt warning stay on even after fastening?
Ensure the buckle clicks securely; if the light remains, the seat sensor or buckle switch might need inspection.
Can I continue to drive if the check engine light appears on the D25S-7?
You may continue operating briefly, but arrange for diagnostics soon to avoid potential engine damage.
What happens if I ignore the overload warning?
Ignoring the overload warning can lead to tipping, structural damage, or serious safety incidents—always reduce the load immediately.