The Mitsubishi Forklift FG18N is a compact, LPG-powered industrial truck designed for efficient material handling in warehouses and yards. Its instrument cluster provides essential operational feedback to keep the forklift running safely and reliably in demanding environments.
Mitsubishi Forklift FG18N Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical malfunction has been detected in the FG18N, such as severe engine or hydraulic failure. | Stop the forklift immediately and consult a qualified technician. | |
| Master Caution | AMBER | A non-critical fault has occurred, like a sensor issue or minor system alert on the FG18N. | Inspect the forklift and schedule service soon. | |
| Check Engine (MIL) | AMBER | The engine management system has detected a problem affecting emissions or performance. | Continue operation if safe, but arrange for diagnostic service. | |
| Engine Oil Pressure | RED | Oil pressure has dropped dangerously low in the FG18N's engine. | Shut down the engine at once and check oil level and leaks. | |
| Battery / Charging | RED | The alternator is not charging the FG18N's battery properly. | Avoid shutting off the engine and have the charging system checked. | |
| Coolant Temperature | RED | The engine coolant temperature is too high, risking engine damage. | Stop the forklift, let it cool, and inspect coolant level. | |
| Brake System | RED | A fault has been detected in the FG18N's brake system, possibly low fluid or brake wear. | Do not operate the forklift until brakes are inspected. | |
| Parking Brake | RED | The parking brake is engaged while the FG18N is running. | Release the parking brake before driving. | |
| Low Fuel | AMBER | LPG fuel level is low and the FG18N will soon run out. | Refuel the LPG tank promptly. | |
| Seat Belt | RED | The operator seat belt is not fastened, which is unsafe during FG18N operation. | Buckle the seat belt before using the forklift. | |
| Service / Hour Meter | AMBER | The FG18N is due for scheduled maintenance based on engine hours. | Arrange for periodic service as indicated. | |
| Work Lights | GREEN | The FG18N's work lights are currently switched on for better visibility. | No action needed unless lights are not required. | |
| Beacon / Rotating Light | AMBER | The warning beacon is active to alert nearby personnel of forklift operation. | Ensure beacon is functioning in active work zones. | |
| Mast / Lift Limit | AMBER | The mast has reached its maximum lifting height or the lift limit switch is triggered. | Lower the forks if further lifting is needed. | |
| Overload / Capacity | RED | The FG18N is lifting a load above its rated capacity, risking tip-over. | Lower the load immediately and check weight limits. | |
| Hydraulic Oil | AMBER | Hydraulic oil level or pressure is below normal in the FG18N. | Check hydraulic oil reservoir and refill or inspect for leaks. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter is clogged or water has accumulated in the separator. | Replace filter or drain water separator soon. | |
| Air Filter | AMBER | The FG18N's air filter is restricted, reducing engine efficiency. | Clean or replace the air filter. |
18 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Oil level too low
- Oil pump failure
- Blocked oil filter
What to do
Check and top up engine oil, inspect for leaks, and replace the oil filter if needed. If the warning remains, have the FG18N serviced immediately to prevent engine damage.
Coolant Temperature
Common causes
- Low coolant level
- Radiator blockage
- Faulty thermostat
What to do
Allow the engine to cool, then check coolant and radiator for obstructions. Refill coolant if needed and seek service for persistent overheating.
Overload / Capacity
Common causes
- Attempting to lift a load above the FG18N's rated limit
- Incorrect load placement
- Damaged load sensor
What to do
Lower the load to within the forklift's capacity, check load placement, and have sensors inspected if the warning persists.
Brake System
Common causes
- Brake fluid leak
- Worn brake pads or shoes
- Master cylinder failure
What to do
Inspect fluid levels and brake components; do not operate the FG18N until the brake system is repaired.
Battery / Charging
Common causes
- Alternator malfunction
- Loose or corroded battery terminals
- Drive belt failure
What to do
Check the alternator, battery connections, and belt. Replace or repair as necessary to restore charging function.
Frequently Asked Questions
What should I do if the Master Warning (Stop) light comes on while driving the FG18N?
Stop the forklift immediately in a safe location and contact your maintenance team to diagnose the issue.
Why does the Overload light activate even with a light load?
The load may be improperly positioned or the mast sensors could be faulty; verify load placement and have the system checked.
How often should I service the FG18N when the hour meter light appears?
Service intervals depend on usage, but typically every 250 hours or as specified in the operator's manual.
Can I continue to operate the FG18N if the air filter warning is on?
It's best to clean or replace the air filter promptly to prevent engine performance issues.
What does it mean if the hydraulic oil light stays on after topping up?
There may be a leak or a sensor issue; inspect the hydraulic system and consult a technician if the problem persists.