The Wacker Neuson ET35 compact excavator features a clear, easy-to-read instrument cluster with LED warning lights. Understanding these indicators is crucial for safe operation and preventing machine damage. This guide explains each symbol and the appropriate response.
Wacker Neuson ET35 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault has occurred in the ET35's engine or hydraulic system, requiring immediate shutdown to prevent damage. | Stop the machine immediately, engage the safety lock, and consult the fault code on the display. | |
| Master Caution | AMBER | A non-critical warning has been triggered on your ET35, indicating a system that needs attention soon. | Reduce load and check the instrument panel for additional warnings; schedule service promptly. | |
| Check Engine (MIL) | AMBER | The ET35's engine control unit has detected a fault in the emissions or performance system. | Have the engine diagnosed by a certified technician; avoid prolonged operation. | |
| Engine Oil Pressure | RED | Low oil pressure in the ET35's engine, risking severe internal damage if operation continues. | Stop the engine immediately, check oil level, and inspect for leaks. | |
| Battery / Charging | RED | The ET35's charging system is failing, possibly due to a faulty alternator or battery connection. | Check battery terminals and alternator belt; if light persists, replace battery or alternator. | |
| Coolant Temperature | RED | Engine coolant temperature in the ET35 is too high, risking overheating and engine damage. | Stop the machine, allow engine to cool, check coolant level and radiator fins. | |
| Hydraulic System | AMBER | The ET35's hydraulic system has an issue, such as low fluid level or filter clogging. | Check hydraulic oil level and condition; inspect for leaks around hoses and cylinders. | |
| Low Fuel | AMBER | Fuel level in the ET35's tank is low, which can cause air ingress if ignored. | Refuel the machine as soon as possible; avoid running the tank empty. | |
| Glow Plug / Preheat | AMBER | The ET35's glow plugs are active (amber steady) or have a fault (flashing) during cold starts. | Wait for the light to go out before cranking; if flashing, have glow plugs checked. | |
| Water in Fuel | AMBER | Water has been detected in the ET35's fuel system, which can cause injector damage. | Drain the water separator immediately and refuel from a clean source. | |
| Air Filter | AMBER | The ET35's engine air filter is restricted, reducing performance and fuel economy. | Clean or replace the air filter as specified in the operator's manual. | |
| Service / Hour Meter | AMBER | Scheduled maintenance is due on the ET35 based on engine hours. | Perform the required service (oil change, filter replacement) per the maintenance schedule. | |
| Swing / Slew Lock | GREEN | The ET35's upper structure swing lock is engaged, preventing rotation during transport. | Disengage the swing lock before operating the excavator. | |
| Work Lights | GREEN | The ET35's work lights are turned on, illuminating the work area. | No action needed; turn off when not required to save battery. | |
| Beacon / Rotating Light | GREEN | The warning beacon on the ET35 is active, alerting nearby personnel. | Ensure the beacon is used in compliance with site safety rules. |
15 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
- Faulty thermostat
- Radiator blockage
What to do
Stop the ET35 immediately and let the engine cool. Check coolant level and add if low. Inspect the radiator for debris and clean if necessary. If the issue persists, have the thermostat tested or replaced by a dealer.
Low Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Shut down the ET35 engine at once. Check the oil level and top up if low. If the light remains, inspect for leaks and examine the oil filter. Have a technician test the oil pump pressure.
Hydraulic System Leak
Common causes
- Damaged hose
- Loose fitting
- Worn seal
What to do
Immediately stop the ET35 and locate the source of the leak. Tighten loose fittings, replace damaged hoses, or install new seals as needed. Refill hydraulic oil to the correct level before resuming work.
Contaminated Fuel System
Common causes
- Water in fuel
- Dirty fuel filter
- Low-quality fuel
What to do
Drain the water separator on the ET35 and replace the fuel filter. Refuel from a clean, reputable source. If poor performance continues, have the fuel system flushed and injectors checked.
Frequently Asked Questions
What does a flashing red master warning mean on my ET35?
A flashing red master warning indicates a critical fault that requires immediate engine shutdown. Check the LCD display for a fault code and consult your dealer before restarting.
Why is the amber master caution light on while digging?
The amber caution light on the ET35 often comes on due to hydraulic oil temperature or low fluid level. Reduce load and check the hydraulic oil level; if it persists, schedule service.
How do I reset the service hour meter after an oil change?
On the ET35, you can reset the service interval by pressing and holding the trip button on the instrument cluster for 5 seconds while in the service menu. Refer to the manual for exact steps.
Can I operate the ET35 with the swing lock light on?
No, the green swing lock light means the upper structure is locked. Engage the swing lock release before digging or swinging to avoid damage.
What should I do if the engine preheat light flashes?
A flashing glow plug light on the ET35 indicates a fault in the preheat system. Do not crank the engine in cold weather; have the glow plugs and relay tested by a technician.
Is it safe to continue working with the air filter light on?
The amber air filter light means the filter is restricted. Operating with a clogged filter reduces power and increases fuel consumption. Replace the filter as soon as possible to avoid engine damage.