Bobcat Dashboard Warning Light Symbols - What Each One Means

Bobcat dashboard warning lights and what they mean — Bobcat dashboard warning lights, symbols and fixes.

Red lights on a Bobcat mean stop the machine and shut down - hydraulic or engine damage can follow quickly if you keep running. Amber lights give you a window to finish the task and address the issue, but do not ignore them across shifts.

Bobcat uses a consistent symbol language across the S-Series skid steers (S450, S550, S650, S770) and T-Series compact track loaders (T450, T550, T650, T770). The lights below cover the full set you will find on late-model machines with the standard LCD instrument panel.

Red warning lights - stop the machine

These lights call for an immediate controlled shutdown. Lower any load to the ground, move to a safe spot, and switch off before investigating.

Warning light	Color	What it means	What to do
Engine Oil Pressure	Red	Oil pressure has dropped below the minimum safe level. Running the engine further will cause rapid bearing and journal damage.	Shut down at once. Check oil level on the dipstick. Do not restart until the cause - low oil, failed pump, or blocked pickup - is found and fixed.
Engine Coolant Temperature	Red	Coolant temperature is above the safe operating ceiling. Overheating damages cylinder heads and gaskets fast.	Shut down. Let the engine cool fully before opening the radiator cap. Check coolant level, inspect the radiator for debris or mud packing, and look for hose leaks.
Hydraulic Oil Temperature	Red	Hydraulic fluid has reached a critically high temperature. Hot oil loses viscosity and no longer protects pump and valve components.	Shut down or go to low idle with no hydraulic load until the temperature drops. Check fluid level, clean the hydraulic oil cooler, and inspect for a kinked or collapsed return line.
Battery / Charging System	Red	The alternator is not maintaining charge, or voltage has fallen below the minimum. Continued operation risks a stall in the field.	Finish the immediate task if safe, then check the alternator belt tension, battery terminals, and alternator output. A multimeter across the battery should read 13.5-14.5 V at idle with charging.

Amber warning lights - service soon

Amber lights allow you to complete a cycle but should not be carried over to the next work shift. On Bobcat machines with the advanced display, an alphanumeric fault code often accompanies these lights - note it before clearing.

Warning light	Color	What it means	What to do
Hydraulic Filter Restriction	Amber	The hydraulic return filter is clogged enough that oil is bypassing through the relief valve. Restricted flow accelerates pump wear.	Replace the hydraulic return filter at the earliest opportunity - most Bobcat machines use a spin-on or cartridge element behind the cab. Check fluid condition at the same time.
Air Filter Restriction	Amber	Intake air restriction has reached the service threshold. A choked filter starves the engine of air and raises exhaust temperatures.	Inspect the primary filter element. Tap it gently to dislodge loose dust and check the condition of the safety element behind it. Replace both elements if the primary is caked.
DPF / Diesel Particulate Filter	Amber	Soot loading in the DPF has reached the regeneration threshold. Passive regen during normal high-load work has not kept up.	On later Tier 4 Bobcat models, initiate a parked or active regen via the instrument panel menu. Ensure the machine is on a clear, level surface away from flammable material. Do not interrupt the cycle once started.
Service / Maintenance Due	Amber	A scheduled maintenance interval - typically engine oil, filters, or fluid - has been reached based on the hour meter.	Check the maintenance schedule in the operator manual for the specific service called out. Reset the service timer after completing the work.
Cold Coolant / Warm-Up	Amber	Coolant temperature is below normal operating range. The machine needs warm-up time before full hydraulic load is applied.	Run at low idle for 3-5 minutes in cold conditions before engaging the loader arms or drive system at full demand.

Preheat, fuel and emissions lights

Bobcat diesels use glow plugs for cold-start assist. The preheat system is managed automatically on most models - you simply wait for the coil symbol to go out before cranking. Rushing this step is one of the most common causes of hard starts on job sites in winter.

Warning light	Color	What it means	What to do
Glow Plug / Preheat	Amber	The glow plug preheat cycle is active. The engine is not ready to crank.	Wait for this light to go out before turning the key to Start. In temperatures below 20 F (-7 C) this can take 15-25 seconds on older machines.
Low Fuel	Amber	Fuel level is low. Bobcat loaders are susceptible to air entering the fuel system if run to empty.	Refuel soon. If the engine stalls from fuel starvation, you will need to bleed the fuel system before it will restart - a time-consuming job on a job site.
Water in Fuel	Amber	The fuel filter water separator has collected enough water to trigger the sensor. Water causes injector and pump corrosion.	Drain the water separator bowl at the base of the fuel filter. If the light returns quickly, suspect contaminated bulk fuel at the job site.
Fuel Filter / Restriction	Amber	Fuel filter restriction is above the service threshold. A clogged filter reduces fuel pressure to the injection system and causes power loss.	Replace the primary fuel filter. If the machine has a secondary filter, inspect and replace it at the same service.

Operator and safety indicator lights

These lights relate to interlocks, seat occupancy, and active system states. Bobcat machines have several safety interlocks - arm, seat bar, and seatbelt - that prevent loader or travel movement if the operator is not in position.

Warning light	Color	What it means	What to do
Seat Belt / Operator Presence	Red	The seat belt is not fastened, or the operator presence system does not detect the operator in the seat.	Fasten the seat belt before lowering the seat bar and operating. On machines with the Bob-Tach system, the loader will not respond to controls until both the belt and seat bar are engaged.
Parking Brake Active	Red	The parking brake is engaged. Travel drives are locked.	This light should go out when the seat bar is lowered and the machine is ready for operation. If it stays on during travel, the parking brake solenoid or switch may be faulty.
Master Warning / Stop	Red	A critical system fault has been detected. The instrument panel will typically display an alphanumeric fault code alongside this light.	Stop the machine safely. Note the fault code on the display, then consult the Bobcat fault code reference or your dealer. Do not continue operation until the fault is identified.

What to do when a red light comes on mid-job

The most important rule: lower your load to the ground before shutting down. A raised arm with a bucket full of material is a hazard to anyone nearby if the machine fails to hold it. Once the load is down, move to clear ground, apply the parking brake, and only then switch off the engine.

Carry a printed copy of the relevant fault code sheet for your model - Bobcat dealer service departments make these available, and the operator manual QR code on the cab pillar links to the digital version. On machines with the Bobcat ACD (Advanced Control Display), the fault code shown on-screen is your fastest diagnostic starting point. For Cat skid steers and compact track loaders, the process is nearly identical - stop, lower the load, note the code. John Deere compact equipment follows the same discipline with its own code set.

Common causes of repeated warning lights on Bobcat machines

Hydraulic overheating is the most frequent amber light on rental and high-cycle machines. Check that the hydraulic oil cooler is not packed with debris and that the oil level is correct - Bobcat specifies checking level when the oil is cold and the machine is on level ground. Overfilling causes aeration and heat just as surely as running low.

Recurring air filter warnings on dusty demolition or grading sites usually point to a damaged pre-cleaner or a cracked air intake hose admitting unfiltered air past the filter element. Inspect the entire intake path, not just the filter itself.

DPF regen warnings on low-duty cycles are common when a machine spends long periods at idle or very light load - the exhaust never gets hot enough to burn off soot passively. Bobcat recommends periodic high-load operation to assist passive regen. For New Holland compact equipment and Kubota machines, the same DPF management principles apply to Tier 4 Final engines.

Frequently asked questions

What does the red oil can symbol mean on a Bobcat?

It means engine oil pressure has fallen below the safe minimum. Shut the engine off immediately - do not restart until you have checked the oil level and identified the cause. Running even a short time with low oil pressure causes severe bearing damage.

Can I keep working if the hydraulic temperature light comes on?

Not safely. Reduce engine speed to low idle and stop all hydraulic work. If the light does not clear within a few minutes, shut down and let the system cool. Check the hydraulic oil level and clean the oil cooler before the next shift.

My Bobcat shows a fault code on the display with a warning light - where do I find what it means?

The operator manual for your specific model contains a fault code table. Bobcat also publishes a full fault code lookup at their parts and service portal. Note the code before clearing it, because some faults require the root cause to be addressed before the code will stay cleared.

How do I reset the service light on a Bobcat?

On most late-model Bobcats with the ACD display, navigate to the maintenance menu and select Reset Service Timer after completing the required service. On older machines with a simpler cluster, hold the hour meter reset button for 5-10 seconds. Consult the operator manual for your specific model number.

Why does the glow plug light stay on for a long time in winter?

In very cold weather, the ECM extends the preheat cycle to ensure the glow plugs bring the combustion chamber to a temperature that supports starting. This is normal. If the light stays on more than 30-40 seconds in mild weather, one or more glow plugs may be failed and drawing extra time from the remaining elements.