The Case CE CX350D is a powerful excavator with a comprehensive instrument cluster that keeps you informed of machine status. Understanding these indicators is crucial for safe and efficient operation on job sites.
Case CE CX350D Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A serious fault exists that requires immediate shutdown on your CX350D. | Stop the machine immediately and consult the fault code in the display. | |
| Master Caution | AMBER | A non-critical fault or system warning needs attention on your CX350D. | Check the message center for specific details and address as needed. | |
| Check Engine (MIL) | AMBER | The engine control system has detected an emission-related or performance issue on your CX350D. | Have the engine diagnosed by a certified technician soon. | |
| Engine Oil Pressure | RED | Engine oil pressure is dangerously low in your CX350D. | Stop the engine immediately and check oil level. | |
| Battery / Charging | RED | The charging system is not functioning properly on your CX350D. | Check alternator belt and battery connections; if persists, service required. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded the safe limit on your CX350D. | Stop engine, let it cool, and check coolant level for leaks. | |
| Hydraulic System | AMBER | A hydraulic system fault or low oil level is detected on your CX350D. | Inspect hydraulic oil level and look for leaks; if light stays on, call service. | |
| Swing / Slew Lock | GREEN | The swing lock is engaged, preventing upper structure rotation on your CX350D. | Disengage swing lock before operating if rotation is needed. | |
| Work Lights | BLUE | The work lights (A-style or cab lights) are activated on your CX350D. | No action needed; use as desired for visibility. | |
| Beacon / Rotating Light | BLUE | The warning beacon on top of the cab is turned on for your CX350D. | Ensure beacon is used when required for site safety. | |
| Water in Fuel | AMBER | Water has been detected in the fuel filter/water separator of your CX350D. | Drain the water separator immediately to prevent injector damage. | |
| Low Fuel | AMBER | The fuel level in your CX350D is low and approaching empty. | Refuel as soon as possible to avoid engine stalling. | |
| Seat Belt | RED | The operator seat belt is not fastened on your CX350D. | Fasten your seat belt before operating the excavator. | |
| Glow Plug / Preheat | AMBER | The glow plugs are active or preheat cycle is underway on your CX350D. | Wait for the light to turn off before starting the engine. | |
| Overload / Capacity | RED | The lift capacity or stability limit is being exceeded on your CX350D. | Reduce load immediately and readjust boom/stick position. | |
| Hydraulic Oil Temperature | RED | Hydraulic oil temperature has exceeded the safe operating range on your CX350D. | Reduce load and allow system to cool; check for restrictions. |
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
- Blocked radiator or intercooler
- Faulty coolant pump
What to do
Stop the engine immediately and let it cool. On your CX350D, check coolant level in the recovery tank and inspect the radiator for debris. If recurring, have the coolant system inspected for leaks or pump failure.
Low Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Plugged oil filter
What to do
Shut down the CX350D right away. Check oil level with dipstick; top up if low. If light stays on, do not restart – call a technician to inspect oil pump and filter.
Hydraulic System Failure
Common causes
- Low hydraulic oil
- Hydraulic pump malfunction
- Leak in high-pressure line
What to do
Stop operation and engage safety lock. On your CX350D, check hydraulic oil level and look for visible leaks. If level is low and no leaks found, have the pump and system pressure tested.
Charging System Failure
Common causes
- Broken alternator belt
- Faulty alternator
- Loose battery connections
What to do
The battery light indicates the CX350D is running on battery power. Check serpentine belt tension and battery cable tightness. If belt is fine, alternator may need replacement.
Fuel System Contamination
Common causes
- Water in fuel
- Clogged fuel filter
- Bad fuel quality
What to do
If water in fuel light illuminates on your CX350D, drain the fuel/water separator immediately. Replace fuel filter if contamination is severe. Use clean, high-quality diesel to avoid repeat issues.
Frequently Asked Questions
Why does the master warning light come on intermittently on my CX350D?
Intermittent master warnings often indicate a sensor fault or wiring issue. Check the fault codes via the display and address the specific code. Common causes include loose connections or failing sensors like the coolant temp or oil pressure sender.
What should I do if the hydraulic oil temperature light comes on while digging hard?
Reduce the load on the hydraulic system by lowering bucket forces or decreasing engine RPM. On the CX350D, the hydraulic fan is controlled by the ECU; if light persists, check for plugged hydraulic oil cooler or low oil level.
How do I reset the master caution after fixing a fault?
After resolving the issue (e.g., topping off DEF or replacing a filter), the master caution should turn off automatically. If it stays on, cycle the key off and then on. If still lit, there may be an active fault code that needs clearing with a diagnostic tool.
Why does the glow plug light stay on too long?
On the CX350D, the glow plug preheat time is temperature-dependent. In very cold weather, it may stay on for up to 20 seconds. If it stays on excessively long or never goes off, the glow plug relay or controller may be faulty.
Can I operate the CX350D with the overload light flashing?
No – the overload light indicates you are exceeding the lift capacity chart for the current configuration. Stop immediately and reduce the load. Repeated overloads can cause structural damage or tipping.
What does the swing lock light mean if it's on while driving?
The swing lock light (green) when on indicates the swing brake is engaged. This is normal when not operating the excavator. However, if you need to slew, disengage the swing lock pedal/switch. If it remains on while trying to swing, check the swing lock mechanism.