The Bobcat E42 is a compact excavator widely used for digging, grading, and utility work on job sites. Its instrument cluster provides operators with real-time alerts and system statuses to ensure optimal performance and safe operation. Understanding these indicators helps prevent downtime and protects vital machine components.
Bobcat Excavator E42 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A severe malfunction or unsafe condition has been detected in a critical system of the Bobcat E42. | Shut down the engine immediately and inspect for cause or contact your Bobcat dealer. | |
| Master Caution | AMBER | A non-critical fault or maintenance issue has been identified on the E42, requiring attention soon. | Review the display for details and schedule corrective action as needed. | |
| Check Engine (MIL) | AMBER | The engine control system has detected a problem specific to the E42 powertrain. | Check for diagnostic codes and consult your service manual before continuing work. | |
| Engine Oil Pressure | RED | Engine oil pressure has dropped below safe limits on the E42 excavator. | Stop the engine at once and check oil level and condition. | |
| Battery / Charging | RED | The E42's charging system is not supplying sufficient voltage to the battery. | Inspect alternator belt and battery connections before restarting. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded safe operating range on the E42. | Let the engine idle to cool and check coolant level and radiator for blockage. | |
| Low Fuel | AMBER | The E42's fuel tank is nearing empty, risking interruption of operation. | Refuel as soon as possible to avoid air entering the fuel system. | |
| Hydraulic System | AMBER | A hydraulic system issue has been detected, such as low fluid or excessive temperature. | Check hydraulic fluid level and inspect for leaks or overheating. | |
| Hydraulic Oil | AMBER | Hydraulic oil level or condition is outside normal limits in the E42. | Examine oil level and replace or top up if necessary. | |
| Fuel Filter / Water Separator | AMBER | Water or contaminants have been detected in the E42's fuel filter assembly. | Drain the water separator and replace the fuel filter if needed. | |
| Water in Fuel | AMBER | Detected water in the fuel system, risking injector or pump damage on the E42. | Drain water separator immediately to protect fuel components. | |
| DPF / Regeneration | AMBER | The diesel particulate filter on the E42 requires regeneration to burn off soot. | Initiate a parked regeneration or follow on-screen prompts to complete the process. | |
| DEF / AdBlue | AMBER | The DEF tank is low or there is a fault in the E42's emissions system. | Top off DEF fluid and check for leaks or system errors. | |
| Air Filter | AMBER | The air filter restriction sensor has detected reduced airflow in the E42 intake. | Inspect and clean or replace the air filter element. | |
| Service / Hour Meter | AMBER | The E42 is due for scheduled maintenance based on engine hours. | Plan service soon to maintain warranty and performance. | |
| Parking Brake | RED | The parking brake is engaged on the E42; movement could cause damage. | Release the parking brake before operating the machine. | |
| Glow Plug / Preheat | AMBER | The engine preheat system is active to assist cold starting on the E42. | Wait until the light turns off before cranking the engine. | |
| Work Lights | GREEN | The E42's work lights are currently switched on for better visibility. | Switch off when not needed to conserve battery. | |
| Beacon / Rotating Light | AMBER | The rotating beacon is active, signaling machine operation in progress. | Deactivate when not working in high-traffic or public areas. | |
| Swing / Slew Lock | AMBER | The swing lock is engaged, preventing upper structure rotation on the E42. | Release swing lock before attempting to rotate the cab. | |
| Door Open | AMBER | A cab door or access panel is not fully closed on the E42. | Secure all doors and panels before operation. |
21 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure
Common causes
- Low engine oil level
- Oil pump malfunction
- Blocked oil filter
What to do
Immediately stop the E42, check oil level and top up if necessary. If issue persists, inspect the oil filter and pump, and consult a Bobcat technician.
Coolant Temperature
Common causes
- Low coolant level
- Radiator blockage
- Faulty thermostat
What to do
Idle the engine to cool down, then check coolant level and radiator for debris. Replace faulty components if overheating continues.
Hydraulic System Warning
Common causes
- Low hydraulic fluid
- Hydraulic leak
- Overheated hydraulic oil
What to do
Inspect for leaks, check and refill hydraulic fluid, and allow the system to cool if overheated. If the warning remains, contact Bobcat service.
DPF / Regeneration
Common causes
- Incomplete regeneration cycles
- Excessive idling
- DPF sensor malfunction
What to do
Follow on-screen prompts to complete a parked regeneration. If the light stays on, a service technician may need to inspect the DPF system.
Battery / Charging
Common causes
- Loose or corroded battery connections
- Faulty alternator
- Damaged wiring
What to do
Check battery terminals for corrosion and ensure tight connections. If problem persists, test the alternator and inspect wiring.
Frequently Asked Questions
What should I do if the DPF regeneration light stays on in my E42?
Initiate a parked regeneration as soon as possible. If the indicator remains after regeneration, consult a Bobcat service technician.
Can I operate the E42 if the hydraulic oil warning is illuminated?
Stop operation and check hydraulic fluid level and for leaks immediately, as running with low or contaminated oil can damage components.
Why does the glow plug light stay on after starting the engine?
In cold weather, the E42 may keep the glow plugs active for a short period after starting to aid smooth running; this is normal unless accompanied by a fault code.
What happens if I ignore the low fuel warning on the E42?
Running out of fuel can introduce air into the system, requiring priming and possibly leading to hard starting or injector issues.
How often should I service the fuel filter on my E42?
Follow the Bobcat maintenance schedule, but replace the fuel filter sooner if the warning light appears or if water is found in the separator.