The Bobcat S185 skid steer loader is a compact workhorse for construction and agriculture. Its indicator cluster provides vital real-time feedback on engine, hydraulic, and safety systems. Understanding these lights helps prevent downtime and costly repairs.
Bobcat Telehandler S185 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault has been detected in the Bobcat S185, such as low engine oil pressure or high coolant temperature. | Shut down the engine immediately and consult the operator's manual. | |
| Master Caution | AMBER | A non-critical system anomaly has been noted in the S185, like a clogged air filter or low battery voltage. | Check the central display for details and service as needed. | |
| Check Engine (MIL) | AMBER | The engine control module on your S185 has detected an emissions or performance issue. | Diagnose with a scanner; possible sensor or fuel system fault. | |
| Engine Oil Pressure | RED | Oil pressure is below safe operating level for the Bobcat S185's Kubota diesel engine. | Stop the engine, check oil level and pressure sensor. | |
| Battery / Charging | RED | The alternator is not charging the battery, or voltage is low in the S185's electrical system. | Check alternator belt and connections; replace battery if necessary. | |
| Coolant Temperature | RED | Engine coolant in the S185 has exceeded safe operating temperature, risking overheating. | Shut down, let engine cool, check coolant level and radiator. | |
| Hydraulic System | AMBER | Hydraulic oil temperature or pressure is outside normal range for the S185's work group. | Reduce load and check hydraulic fluid level and filter. | |
| Fasten Seat Belt | RED | The operator in the Bobcat S185 has not fastened their seat belt, which is mandatory. | Fasten seat belt before operating the loader. | |
| Glow Plug / Preheat | AMBER | The glow plugs are heating the intake air for the diesel engine when starting a cold S185. | Wait for light to turn off before cranking the engine. | |
| High Beam | BLUE | The high beam headlights are on, illuminating the work area ahead of the S185. | No action needed; switch to low beam when other equipment is near. | |
| Work Lights | GREEN | The auxiliary work lights on the Bobcat S185 are activated for better visibility. | Use as needed; turn off when not required to conserve battery. | |
| Service / Hour Meter | GREEN | Indicates the total operating hours of the S185; service interval may be approaching. | Refer to the maintenance schedule for upcoming services. | |
| Seat Belt Warning | RED | Supplement to fasten seatbelt light; reminds the S185 operator to buckle up. | Fasten seat belt immediately. | |
| Low Fuel | AMBER | Diesel fuel level in the Bobcat S185's tank is low and needs refilling soon. | Refuel as soon as possible to avoid running out. | |
| Overload / Capacity | RED | The S185's rated operating capacity has been exceeded; risk of tip-over or structural damage. | Reduce the load immediately to a safe weight. |
15 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheat
Common causes
- Low coolant level
- Blocked radiator fins
- Failed water pump
What to do
For the S185, shut down, allow engine to cool, check coolant reservoir and clean radiator core with compressed air.
Hydraulic System Failure
Common causes
- Low hydraulic fluid
- Contaminated oil
- Relief valve stuck open
What to do
Check hydraulic oil level and condition on the S185; replace filter and oil if contaminated; inspect valves.
Charging System Fault
Common causes
- Broken alternator belt
- Worn alternator brushes
- Loose battery cables
What to do
In the S185, tighten battery terminals, replace alternator belt if frayed, test alternator output.
Engine Oil Starvation
Common causes
- Low oil level
- Clogged oil filter
- Oil pump failure
What to do
Stop the S185 immediately, check dipstick, add oil if low; replace oil filter at service intervals.
Seat Belt Sensor Malfunction
Common causes
- Faulty buckle switch
- Damaged wiring harness
- Corroded connector
What to do
On the S185, inspect seat belt buckle for debris, check wiring under seat, clean connectors.
Frequently Asked Questions
What does the amber master caution light mean on my Bobcat S185?
It signals a non-critical issue like a dirty air filter or low battery; check the gauge cluster display for specifics and schedule service.
Why does the overload light come on even with light loads?
The S185's overload sensor may be misadjusted or the lift arms are binding; recalibrate the load sensing system per the manual.
How do I reset the hour meter service light?
Access the service menu via the instrument cluster buttons on the S185; select 'Reset Service' after completing maintenance.
Is it normal for the glow plug light to flash?
No, a flashing glow plug light on the S185 indicates a fault in the preheat system; check glow plug relay and fuses.
Can I operate the S185 with the check engine light on?
Brief operation is possible, but prolonged use may cause engine damage; diagnose the fault code with a reader.
Why does the hydraulic warning light flicker when lifting?
Low hydraulic fluid level or aeration in the pump on your S185 can cause flickering; top off fluid and bleed air if needed.