Bobcat S160 Warning Lights and Symbols (Meaning and Fixes)

The Bobcat S160 skid steer loader uses a simple dashboard with warning lights to alert you to machine status. Red indicators demand immediate action, while amber cautions signal upcoming service needs. Green or blue lights confirm normal operation or active features.

How to read the colors: Red lights require immediate shutdown and inspection. Amber indicates a warning that needs attention soon. Green/blue lights show systems are active or functioning normally.

Bobcat S160 Warning Light Symbols

SymbolNameColorWhat it meansWhat to do
Master Warning (Stop)REDA critical fault has been detected in the S160's engine, hydraulics, or safety systems that requires an immediate stop.Stop the machine safely, shut off the engine, and consult the operator's manual or contact your Bobcat dealer.
Master CautionAMBERThe S160's monitoring system has detected a non-critical issue that needs attention soon to prevent escalation.Investigate the associated warning light and schedule service if needed; continue operation with caution.
Check Engine (MIL)AMBERThe engine control module on your S160 has recorded a fault related to emissions, fuel, or engine performance.Have the engine diagnosed by a qualified technician; continued operation may reduce power or damage components.
Engine Oil PressureREDEngine oil pressure in the S160 has dropped below safe levels, risking severe engine damage.Stop the engine immediately, check oil level and for leaks; do not restart until fixed.
Battery / ChargingREDThe S160's charging system is not maintaining battery voltage, likely due to a failed alternator or wiring issue.Check battery connections and alternator belt; if light stays on, replace alternator or battery.
Coolant TemperatureREDEngine coolant temperature on the S160 has exceeded the normal operating range, risking overheating.Stop and let the engine cool; check coolant level and radiator for blockages; do not restart until cool.
Hydraulic Oil TemperatureREDThe hydraulic oil in your S160 is too hot, which can cause pump and valve damage.Reduce load and allow hydraulics to cool; check oil level and cooler for debris.
PParking BrakeAMBERThe parking brake on the S160 is engaged or there is a fault in the brake system.Release the parking brake before moving; if light stays on, inspect brake switch and linkage.
Seat BeltREDThe operator's seat belt is not fastened on the S160; the machine may not operate or may sound an alarm.Fasten the seat belt immediately to ensure safety and allow normal operation.
Glow Plug / PreheatAMBERThe glow plugs are heating the engine's intake air for cold starting on this S160 diesel model.Wait for the light to turn off before starting the engine; if it flashes, there may be a glow plug fault.
Low FuelAMBERThe fuel level in the S160's tank is low and needs refueling soon to prevent air in the system.Refuel with clean diesel; do not run the tank completely empty to avoid priming issues.
High BeamBLUEThe high beam headlights on your S160 are turned on for improved visibility at night.Use high beams only in low-traffic areas; dim them for oncoming vehicles.
Hydraulic SystemREDA general hydraulic system fault has been detected on the S160, such as low pressure or a leak.Stop the machine and check hydraulic fluid level and hoses for damage; contact a dealer.
Engine Oil TemperatureAMBEREngine oil temperature on the S160 is higher than normal but not critical yet.Reduce engine load and allow it to cool; check oil level and cooling system.
Air Filter RestrictionAMBERThe S160's air filter is restricted, reducing engine performance and fuel economy.Replace the air filter element; clean the housing if necessary.
Fuel Filter / Water SeparatorAMBERWater has been detected in the S160's fuel system or the fuel filter is clogged.Drain the water separator and replace the fuel filter if needed; use clean fuel.
Service / Hour MeterAMBERThe S160 has reached a scheduled maintenance interval based on engine hours.Perform the required service per the operator's manual (oil change, filters, etc.).
Work LightsBLUEThe auxiliary work lights on the S160 are turned on for enhanced job site illumination.Turn off work lights when not needed to conserve battery power.
Door OpenAMBERThe cab door or engine compartment cover on the S160 is not fully closed.Close and latch the door or cover securely before operating the machine.
Reduced Power (Limp Mode)AMBERThe S160's engine computer has limited power to protect the engine from damage due to a fault.Finish the job gently and have the machine diagnosed; do not continue under heavy load.

20 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
  • Radiator or cooling fan blockage
  • Faulty thermostat or water pump

What to do

Stop the S160 immediately and let the engine cool. Check coolant level and the radiator for debris. If the problem persists, have the cooling system inspected by a Bobcat dealer.

Low Engine Oil Pressure

Common causes

  • Low oil level
  • Oil pump failure
  • Clogged oil filter or passages

What to do

Shut off the engine right away. Check the oil level and add oil if low. If the light remains on, do not restart; tow the S160 to a service center for oil system diagnosis.

Hydraulic System Failure

Common causes

  • Low hydraulic fluid level
  • Broken hydraulic hose or leak
  • Contaminated or overheated fluid

What to do

Stop all hydraulic functions and shut down the S160. Inspect fluid level and look for leaks. Address any leaks and allow the system to cool before restarting.

Battery Charging Fault

Common causes

  • Failed alternator
  • Loose or corroded battery connections
  • Damaged wiring harness

What to do

Check battery terminals for tightness and cleanliness. If the light stays on while running, the alternator may need replacement. Consult a Bobcat technician.

Frequently Asked Questions

What does the flashing glow plug light mean on my Bobcat S160?

A flashing glow plug indicator on the S160 signals a fault in the preheat system. The engine may start but with difficulty. Have the glow plugs and relay checked by a dealer.

Why is my hydraulic warning light on after startup?

On the S160, the hydraulic warning light may illuminate briefly during self-test, but if it stays on, it indicates low hydraulic fluid, a leak, or a sensor issue. Check fluid level and inspect hoses.

How do I reset the service hour meter light on the S160?

The service indicator on the S160 is reset by holding the instrument panel button (if equipped) or by using a diagnostic tool. Refer to your operator's manual for the exact procedure as it varies by model year.

Can I continue working with the check engine light on?

It is not recommended. The check engine light on the S160 can indicate emission or performance issues that may worsen over time. Reduced power may occur; schedule a diagnostic as soon as possible.

What should I do if the coolant temperature light comes on?

Stop the S160 immediately to prevent engine damage. Let the engine cool, then check the coolant level and look for leaks. Do not restart until the issue is resolved to avoid costly repairs.

Why does my master caution light sometimes flash without any other warning?

The master caution on the S160 may flash for minor system errors or communication glitches. Check the operator's manual for stored fault codes; if it persists, visit a dealer for a full system scan.