The McCormick X5.120 is a versatile utility tractor equipped with a 4-cylinder turbocharged engine and a comprehensive digital instrument cluster. This guide explains the warning and indicator lights you may encounter during operation, tailored specifically to the X5.120 model.
McCormick X5.120 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Check Engine | AMBER | The engine ECU has detected a fault in the emission or performance system, such as a sensor or turbo issue, specific to the X5.120's Tier 4 engine. | Reduce engine load and contact your McCormick dealer for diagnostic scanning. | |
| Engine Oil Pressure | RED | Engine oil pressure has dropped below safe operating level, possibly due to low oil or pump failure in the X5.120's lubrication system. | Stop engine immediately and check oil level; do not restart until resolved. | |
| Battery / Charging | RED | The alternator is not charging the battery, or the voltage is too low for the X5.120's electrical systems. | Check alternator belt and connections; if light persists, have charging system inspected. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded normal range, often due to restricted airflow or low coolant level in the X5.120's cooling system. | Stop engine and let it cool; check coolant level and radiator fins for debris. | |
| Transmission Temp | AMBER | The transmission oil temperature is high, which could reduce the life of the X5.120's gearbox if ignored. | Reduce load and shift to a higher gear; allow transmission to cool before heavy work. | |
| Parking Brake | BLUE | The parking brake is engaged on your X5.120, indicated for safety when starting or leaving the tractor. | Release parking brake before driving. | |
| Glow Plug / Preheat | AMBER | The glow plugs are preheating the engine for cold start; wait until the light goes out on the X5.120. | Turn ignition on and wait for light to extinguish before cranking. | |
| DPF / Regeneration | AMBER | The diesel particulate filter needs regeneration to burn off soot, part of the X5.120's emissions system. | Operate tractor at high exhaust temperature (e.g., heavy PTO work) until light goes out. | |
| DEF / AdBlue | AMBER | The AdBlue level is low or the system has a fault, affecting the X5.120's SCR emissions control. | Top up DEF fluid; if light stays on, check DEF quality or consult dealer. | |
| Water in Fuel | AMBER | Water has been detected in the fuel filter/water separator, which can damage the X5.120's injection system. | Drain water from fuel filter bowl as shown in the operator's manual. | |
| Low Fuel | AMBER | Fuel level is low; the X5.120 has a fuel tank capacity of 100 liters, so refill soon. | Refuel with clean diesel to avoid air in the system. | |
| High Beam | BLUE | High beam headlights are activated, providing maximum illumination for night fieldwork on the X5.120. | Dim when approaching other vehicles or buildings. | |
| Hydraulic System | AMBER | A fault is detected in the hydraulic system, which powers the X5.120's three-point hitch and remote valves. | Check hydraulic oil level and filter; if light remains, have system serviced. | |
| Fasten Seat Belt | RED | The operator's seat belt is not fastened; safety regulations require it to be locked on the X5.120. | Fasten seat belt before operating the tractor. | |
| Reduced Power (Limp Mode) | AMBER | The engine has entered a protective derate mode due to a detected fault, limiting the X5.120's power output. | Reduce load and safely finish work; have the fault diagnosed by a dealer. | |
| Air Filter | AMBER | The engine air filter is restricted, reducing airflow to the X5.120's turbocharged engine. | Clean or replace air filter as per maintenance schedule. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter/water separator requires service or draining; may affect fuel flow on the X5.120. | Replace fuel filter and drain water separator according to manual. | |
| Service / Hour Meter | GREEN | Indicates that scheduled maintenance is due based on engine hours; for the X5.120, typically every 250 hours. | Perform required service as specified in the operator's manual. | |
| Work Lights | GREEN | The additional work lights are on, providing extra illumination for front or rear implements on the X5.120. | Turn off when not needed to save battery. | |
| Differential Lock | AMBER | The differential lock is engaged, providing equal traction to both rear wheels on the X5.120. | Disengage when turning or on hard surfaces to avoid tire wear. | |
| PTO Engaged | AMBER | The power take-off is engaged, driving attached implements like mowers or balers on the X5.120. | Ensure PTO speed is correct for implement; disengage when not in use. |
21 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Blocked oil filter
What to do
Check oil level with dipstick; if low, top up 15W40 oil. If light persists, stop engine and have oil system inspected by a McCormick dealer.
Coolant Overheat
Common causes
- Low coolant
- Radiator blockage
- Thermostat stuck closed
What to do
Allow engine to cool, then check coolant reservoir. Clean radiator fins of debris; if recurring, replace thermostat or water pump.
Transmission Overheat
Common causes
- Excessive load
- Low transmission oil
- Clutch slip
What to do
Reduce ground speed and shift to a higher range. Check transmission oil level and top up with recommended fluid. For persistent overheating, consult dealer.
Electrical Charging Fault
Common causes
- Loose alternator belt
- Faulty alternator
- Battery terminal corrosion
What to do
Check alternator belt tension and tighten if needed. Clean battery terminals and ensure good connections. If light remains, replace alternator.
DEF System Malfunction
Common causes
- Low AdBlue fluid
- DEF line blockage
- Faulty NOx sensor
What to do
Top up AdBlue tank with certified fluid. If light persists, inspect DEF lines for kinks or crystallization; may require dealer service.
Frequently Asked Questions
Why does the DPF regen light flash on my X5.120?
It indicates active regeneration; operate the tractor under load (e.g., PTO work) at high RPM for about 20 minutes to complete the process.
The AdBlue light came on, but I just filled it. What now?
Ensure you used the correct DEF fluid (ISO 22241). Sometimes air in the system can trigger the light; drive the tractor for 15 minutes to purge air.
My transmission temperature light is on after heavy tilling. Is that normal?
It can happen under extreme loads. Reduce ground speed and select a higher gear. If it stays on, check transmission oil level and ensure cooler fins are clean.
What does the hydraulic light mean on my X5.120?
It senses a fault in the hydraulic system, often low oil level or a clogged filter. Check the sight glass on the hydraulic reservoir and replace the filter if dirty.
The check engine light is solid amber. Can I continue working?
Yes, but with reduced power. It's safe to finish the task at reduced load, but schedule a diagnostic scan with your dealer soon to prevent further issues.
How often should I service the fuel filter/water separator on the X5.120?
Every 250 hours or annually, whichever comes first. Also drain any accumulated water from the separator bowl weekly during wet conditions.