Kubota BX/B U17 Warning Lights and Symbols (Meaning and Fixes)

The Kubota BX/B U17 compact tractor/mower features a straightforward instrument cluster that keeps you informed of engine, hydraulics, and attachments. Understanding these warnings helps ensure safe operation and long machine life.

How to read the colors: Red indicates stop immediately; amber warns of a condition requiring service soon; green or blue signals an active feature or normal status.

Kubota BX/B U17 Warning Light Symbols

SymbolNameColorWhat it meansWhat to do
Master Warning (Stop)REDWhen illuminated red, this light indicates a critical fault requiring immediate shutdown of your BX/B U17 to prevent engine or drivetrain damage.Stop the engine immediately, consult the manual, and contact a Kubota dealer.
Master CautionAMBERThis amber light alerts you to a non-critical issue such as low fuel or a minor sensor fault on your BX/B U17 that needs attention soon.Check the display for additional messages and service the tractor as needed.
Check EngineAMBERIlluminates when the engine control unit detects a fault in emissions, fuel, or ignition systems on your Kubota BX/B U17.Have the engine diagnosed by a technician; avoid prolonged operation.
Engine Oil PressureREDLights up when oil pressure drops below safe levels, risking severe engine damage on your BX/B U17.Stop the engine immediately and check oil level; add oil if low or inspect for leaks.
Battery / ChargingREDIndicates the alternator is not charging the battery or charging voltage is too low in your BX/B U17.Check battery connections and alternator belt; if persists, have charging system tested.
Coolant TemperatureREDWarns of engine overheating due to low coolant, a stuck thermostat, or a clogged radiator on your BX/B U17.Stop the engine, let it cool, check coolant level, and inspect for obstructions.
PParking BrakeREDLights up when the parking brake is engaged; on BX/B U17 models it also serves as a reminder before driving.Release the parking brake before moving off.
Glow Plug / PreheatAMBERIlluminates during preheating on cold starts for your Kubota BX/B U17 diesel engine; wait until it goes out before cranking.Turn the key to the preheat position and wait for the light to extinguish.
Low FuelAMBERLights up when the fuel level in your BX/B U17's tank is low, typically below 10% remaining.Refuel as soon as possible to avoid running out during operation.
High BeamBLUEIndicates the headlight high beams are active on your BX/B U17 for improved forward visibility.Dim to low beam when approaching other vehicles or operators.
PTOPTO EngagedAMBERWarns that the power take-off is engaged on your BX/B U17; unintended engagement can cause injury.Disengage PTO before starting or stopping the engine, and when not in use.
Differential LockAMBERIlluminates when the differential lock is engaged on your BX/B U17 to provide maximum traction.Disengage differential lock when making turns or on hard surfaces.
Work LightsBLUEIndicates the rear or front work lights are turned on for your BX/B U17 for better visibility during tasks.Turn off work lights when not needed to save battery.
Hydraulic SystemAMBERAlerts to low hydraulic fluid level or high temperature in the hydraulic system of your BX/B U17.Check hydraulic fluid level and inspect for leaks; allow system to cool.
Seat BeltREDReminds the operator to fasten the seat belt before operating your BX/B U17 for safety.Fasten your seat belt immediately before moving the tractor.

15 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 due to leaks or neglect
  • Clogged radiator fins or debris buildup
  • Failed thermostat or water pump

What to do

Stop engine immediately, allow to cool, then check coolant level and radiator condition. Refill with approved coolant and clean fins. Replace thermostat or water pump if needed.

Loss of Oil Pressure

Common causes

  • Low oil level from consumption or leaks
  • Plugged oil filter or worn oil pump
  • Diluted oil from fuel contamination

What to do

Shut down engine immediately, check oil level and top up with correct viscosity. If light stays, inspect filter and pump; do not restart until resolved.

Charging System Failure

Common causes

  • Loose or corroded battery terminals
  • Slipping or broken alternator belt
  • Faulty alternator or voltage regulator

What to do

Check battery connections and clean corrosion. Inspect alternator belt tension and condition. If belt is fine, have alternator output tested at a shop.

Hydraulic System Overheat or Low Fluid

Common causes

  • Low hydraulic fluid level from leaks
  • Contaminated fluid or wrong viscosity
  • Prolonged heavy use exceeding duty cycle

What to do

Park tractor on level ground, check hydraulic fluid level with engine off. Add correct Kubota UDT fluid. Let system cool before resuming light work.

Frequently Asked Questions

Why does my BX/B U17 glow plug light flash?

A flashing glow plug light on your Kubota BX/B U17 usually indicates a fault in the preheat system, such as a bad glow plug or relay. Have it diagnosed to ensure reliable cold starting.

Can I drive with the check engine light on?

You can operate at reduced power temporarily, but continued driving may cause poor performance and emissions issues. Schedule a service soon to read the fault code.

What does the master warning light mean?

The master warning light on your BX/B U17 is a red stop signal; it accompanies another warning. Stop the engine immediately and refer to the manual for the associated symbol.

How do I reset the service hour meter light?

The service light on Kubota BX/B U17 is typically reset by turning the ignition off, then holding a button (often the hour meter reset) while turning the key to on. Consult your model's manual.

The PTO engaged light stays on after disengaging. What's wrong?

If the light remains on after disengaging the PTO on your BX/B U17, the switch may be stuck or there's a wiring short. Check the PTO lever position and have the switch inspected.

Why is my differential lock light blinking?

A blinking differential lock light on the BX/B U17 indicates the differential is partially engaged or there's a sensor fault. Stop and ensure the pedal is fully released; if it persists, service the mechanism.