The Case skid steer warning system is designed to alert you to issues specific to your machine, from engine faults to hydraulic concerns. Understanding these symbols helps maintain performance and safety. This guide covers genuine indicators for models like the SV340 and SR175.
Case skid steer Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault has been detected—stop the engine immediately to prevent damage on your Case skid steer. | Shut off engine and consult manual or dealer. | |
| Master Caution | AMBER | A non-critical fault is present; operate with caution and schedule service for your Case machine. | Check other warning lights and service soon. | |
| Check Engine (MIL) | AMBER | The engine control module has detected a fault in the emissions or fuel system on your Case skid steer. | Have engine diagnosed by a technician. | |
| Engine Oil Pressure | RED | Oil pressure is critically low—engine damage is imminent if you continue running your Case. | Stop engine immediately and check oil level. | |
| Battery / Charging | RED | The charging system voltage is too low or not charging on your Case skid steer. | Check alternator belt and battery connections. | |
| Coolant Temperature | RED | Engine coolant is overheated—allow the engine to cool before investigating on your Case. | Turn off engine, check coolant level and radiator. | |
| Hydraulic System | AMBER | Hydraulic pressure or temperature is abnormal on your Case skid steer—often due to low oil or blocked cooler. | Check hydraulic oil level and clean debris from cooler. | |
| Glow Plug / Preheat | AMBER | Glow plugs are preheating the engine—wait until this light goes out before starting your Case. | Wait for light to turn off, then start. | |
| Parking Brake | RED | Parking brake is engaged on your Case skid steer—must be released to move. | Release parking brake before driving. | |
| Seat Belt | AMBER | Operator seat belt is not fastened—essential for safety on your Case machine. | Fasten seat belt. | |
| DPF / Regeneration | AMBER | Diesel particulate filter is passively or actively regenerating, or needs regeneration on your Case skid steer. | Follow regeneration procedure in the manual. | |
| DEF / AdBlue | AMBER | DEF level is low or there is a fault in the selective catalytic reduction system on your Case. | Refill DEF or have system serviced. | |
| Water in Fuel | AMBER | Water has accumulated in the fuel separator—drain immediately to protect your Case's injectors. | Drain water from fuel filter/water separator. | |
| Low Fuel | AMBER | Fuel level is low on your Case skid steer—refuel to avoid air in the system. | Add diesel fuel. | |
| Air Filter | AMBER | Engine air filter is restricted on your Case—reduces power and fuel economy. | Clean or replace air filter. | |
| Hydraulic Oil | AMBER | Hydraulic oil level is low or temperature is high on your Case skid steer. | Check hydraulic oil level and cooler operation. |
16 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 debris blockage
- Faulty thermostat or fan clutch
What to do
Immediately stop the engine and let it cool. For your Case skid steer, check coolant level in the expansion tank and clean debris from the radiator fins. If the issue persists, inspect the thermostat and fan drive.
Hydraulic System Failure
Common causes
- Low hydraulic oil
- Clogged return filter
- Auxiliary pump failure
What to do
Stop operation and check hydraulic oil level with the machine on level ground. On Case machines, also inspect the return filter indicator and replace if necessary. Do not operate until oil is at proper level.
DEF System Malfunction
Common causes
- Low DEF quality or level
- DEF pump or injector fault
- Frozen DEF in cold weather
What to do
Refill with fresh DEF meeting ISO 22241. If the light persists, your Case skid steer may need a DEF system regeneration by a dealer. In cold climates, ensure DEF tank heater is working.
Electrical / Charging Issue
Common causes
- Loose or corroded battery terminals
- Failed alternator
- Blown fuse
What to do
Check battery connections for tightness and corrosion. On Case machines, verify the alternator belt tension and condition. Test battery voltage; below 12.4V may indicate a charging fault.
Frequently Asked Questions
What does the red stop light mean on my Case skid steer?
The red master warning light indicates a critical fault that requires immediate engine shutdown to avoid severe damage. Stop the engine and investigate the accompanying specific warning light.
How do I perform a DPF regeneration on my Case skid steer?
When the DPF regeneration light is solid amber, park the machine away from combustibles, engage the parking brake, and depress the regen switch (often near the steering yoke). Follow the on‑screen prompts or manual instructions.
Why does my hydraulic light come on intermittently?
Intermittent hydraulic warning often indicates low oil level during operation or a blocked cooler. Check the hydraulic oil level with the engine off and ensure the cooler fins are clean. If it persists, have the charge pressure checked.
What should I do if the glow plug light stays on?
If the glow plug light remains on after starting, it may indicate a faulty glow plug relay or control module. On Case machines, the preheat cycle should automatically shut off; have the system diagnosed to avoid hard starts.
How often should I drain the water separator on my Case skid steer?
Drain the water separator daily or when the water‑in‑fuel light indicates. Your Case machine’s separator is typically located near the fuel tank; open the drain valve until clean fuel appears.
Can I bypass the DEF system warning?
No. The DEF system is integral to emissions compliance. If the light remains on after refilling, your Case skid steer will eventually derate power. Only a dealer can clear certain faults after repair.