The Massey Ferguson MF 255 is a classic utility tractor known for its reliability and simplicity. Its instrument cluster features essential warning lights to alert the operator to critical engine and system conditions. Understanding these indicators helps maintain the tractor's performance and longevity.
Massey Ferguson MF 255 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | Illuminates when a serious fault (e.g., low oil pressure or overheating) occurs on your MF 255, demanding immediate engine shutdown. | Stop the engine safely and check oil pressure and coolant temperature. | |
| Engine Oil Pressure | RED | Lights up when oil pressure drops below safe levels, often due to low oil or a faulty pump on your MF 255. | Stop the engine immediately and check oil level; if full, inspect the oil pump or pressure switch. | |
| Battery / Charging | RED | Indicates the alternator is not charging properly or the battery voltage is low on your MF 255. | Check alternator belt tension and battery connections; if persistent, test alternator output. | |
| Coolant Temperature | RED | Warns of engine overheating, often from a clogged radiator or low coolant level specific to the MF 255's Perkins engine. | Stop the engine and let it cool; check coolant level and radiator for debris. | |
| Glow Plug / Preheat | AMBER | Stays on while glow plugs are warming the intake air for cold starts on your MF 255 diesel engine. | Wait for the light to turn off before engaging the starter. | |
| Parking Brake | AMBER | Reminds you that the parking brake is engaged while the tractor is running, a common feature on the MF 255. | Release the parking brake before moving. | |
| High Beam | BLUE | Indicates the high beam headlights are active, useful for field work in low light on your MF 255. | No action needed; dip beams when approaching others. |
7 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 fins
- Faulty thermostat or water pump
What to do
On your MF 255, stop the engine immediately and allow it to cool. Check the coolant level in the radiator and look for debris blocking airflow. If it repeats, inspect the thermostat and water pump.
Low Oil Pressure
Common causes
- Low oil level
- Worn oil pump
- Clogged oil filter or pickup screen
What to do
Stop the engine at once. Check the dipstick; if low, add the correct viscosity oil (SAE 30 in summer). If full, the oil pump or filter may need service on your MF 255.
Charging System Failure
Common causes
- Loose or broken alternator belt
- Failed alternator
- Corroded battery terminals
What to do
Inspect the belt tension first on your MF 255. Clean any corrosion from battery terminals. If the light stays on, test the alternator output with a multimeter.
Glow Plug Fault
Common causes
- Burnt out glow plug
- Faulty relay or wiring
- Extended preheat time due to cold
What to do
If the glow plug light stays on too long or doesn't come on, check the glow plug relay and individual glow plugs with a test light on your MF 255.
Frequently Asked Questions
Why does the master warning light come on but the engine seems fine?
On the MF 255, the master warning is triggered by other warning lights. Check oil pressure, coolant temp, and battery charging lights. If none are on, it may be a faulty sensor or wiring issue.
Can I drive the tractor with the brake system light on?
The MF 255 does not have a general brake system light; the parking brake light only indicates engagement. If you suspect brake issues, test pedal firmness before operating.
How long should the glow plug light stay on before starting?
In average temperatures, 5-10 seconds is normal; in cold weather it may take up to 20 seconds. Wait until the light goes off before cranking your MF 255.
What does it mean if the coolant temperature light flickers?
Flickering suggests an intermittent overheating condition, often from low coolant or a failing thermostat. Check coolant level and consider replacing the thermostat on your MF 255.
Is there a fuel filter warning light on the MF 255?
No, the MF 255 does not have a fuel filter or water-in-fuel warning light. Blocked filters cause performance issues but no dashboard indication.