The Western Star 5700XE instrument cluster is designed for long-haul efficiency, with a digital display that prioritizes critical alerts. Its layout emphasizes engine, brake, and aftertreatment system status to keep you informed on the road.
Western Star 5700XE Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | Illuminates when a critical fault (e.g., low oil pressure or high coolant temperature) is detected in your 5700XE, requiring immediate stop. | Safely pull over and turn off the engine. Investigate the accompanying warning message. | |
| Master Caution | AMBER | Lights up for non-critical system issues (like a DEF level warning) that need attention soon on your 5700XE. | Check the display for additional details and address the issue at the next stop. | |
| Check Engine (MIL) | AMBER | Indicates an engine or emission system fault detected by the 5700XE's ECM, often related to the Detroit Diesel engine. | Have the engine scanned by a dealer or repair shop to diagnose the fault. | |
| Engine Oil Pressure | RED | Warns of low engine oil pressure, which can cause severe engine damage in your 5700XE's Detroit Diesel. | Stop the engine immediately and check oil level and pressure sensor. | |
| Battery / Charging | RED | Indicates the alternator is not charging the battery or the voltage is too low for the 5700XE's electrical system. | Check alternator belt and connections; replace battery or alternator if necessary. | |
| Coolant Temperature | RED | Lights up when coolant temperature exceeds safe limits in your 5700XE's cooling system. | Stop the engine and let it cool. Check coolant level and for leaks. | |
| Transmission Temp | AMBER | Shows the transmission fluid is overheating, common when hauling heavy loads with the 5700XE's Allison or Eaton transmission. | Reduce load or shift to a lower gear; pull over to let transmission cool. | |
| Brake System | RED | Alerts to a brake system fault, such as low air pressure or worn pads, compromising stopping ability on your 5700XE. | Check air pressure gauge and visually inspect brakes; do not drive until resolved. | |
| ABS | AMBER | Indicates a problem with the anti-lock brake system on your 5700XE, but standard brakes still work. | Have the ABS system inspected by a technician soon. | |
| Parking Brake | RED | Reminds that the parking brake is engaged or not fully released on your 5700XE. | Disengage parking brake before driving. | |
| Tire Pressure (TPMS) | AMBER | Warns of low tire pressure in one or more tires, improving safety and fuel economy on the 5700XE. | Check and inflate tires to recommended pressure at next stop. | |
| Seat Belt | RED | Reminds that the driver's seat belt is not fastened in the 5700XE. | Fasten seat belt immediately. | |
| Glow Plug / Preheat | AMBER | Illuminates during cold start preheating on the 5700XE's Detroit Diesel; turns off when ready. | Wait for the light to turn off before cranking the engine. | |
| DPF / Regeneration | AMBER | Indicates the diesel particulate filter is regenerating or needs cleaning on your 5700XE's aftertreatment system. | If flashing, drive at highway speed to aid regeneration; if solid, see dealer. | |
| DEF / AdBlue | AMBER | Warns that diesel exhaust fluid level is low or quality is poor, affecting emissions on the 5700XE. | Add DEF at next stop; if quality issue, have system checked. | |
| Water in Fuel | AMBER | Detects water in the fuel/water separator, which can damage the 5700XE's fuel system. | Drain the water from the fuel filter separator as soon as possible. | |
| Low Fuel | AMBER | Indicates fuel level is low in the 5700XE's tanks. | Refuel at next opportunity to avoid running out. | |
| High Beam | BLUE | Lights up when the high-beam headlights are activated on your 5700XE. | Dim when approaching other vehicles. | |
| Air Brake Pressure (Low) | RED | Alerts that air brake system pressure is below safe operating level on the 5700XE. | Stop the vehicle and build air pressure; check for air leaks. | |
| Engine / Exhaust Brake | GREEN | Shows that the engine brake or exhaust brake is engaged, assisting braking on the 5700XE. | No action needed; indicates active braking. | |
| Trailer | AMBER | Warns of a fault in the trailer's electrical or brake system connected to your 5700XE. | Check trailer connections and trailer brakes at next stop. |
21 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant
- Faulty thermostat
- Radiator blockage
What to do
For the 5700XE, stop immediately and let the engine idle to cool. Check coolant level in the degas bottle and inspect for leaks. If persistent, have the cooling system serviced.
Low Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
On your 5700XE, shut down the engine right away. Verify oil level with the dipstick; if low, add oil. If level is fine, have the oil pressure sensor and pump inspected by a Detroit Diesel technician.
Air Brake Failure
Common causes
- Compressor fault
- Air leak in lines
- Moisture in air tanks
What to do
In the 5700XE, monitor the air pressure gauge. If pressure drops below 100 psi, pull over safely. Drain air tanks to remove moisture and check for audible leaks; repair as needed.
Charging System Failure
Common causes
- Broken alternator belt
- Faulty alternator
- Corroded battery terminals
What to do
For the 5700XE, if the battery light stays on, check the alternator belt tension and condition. Test battery voltage; if below 12.4V, charge or replace battery. Have the alternator tested.
DEF System Issue
Common causes
- Low DEF level
- DEF quality problem
- DEF pump failure
What to do
On your 5700XE, add fresh DEF if low. If the light persists, the DEF quality sensor may need replacement; consult a dealer to avoid reduced engine power.
Frequently Asked Questions
What does the master warning light mean on the 5700XE?
It indicates a critical fault that requires immediate stopping. Check the display for the specific issue, such as low oil pressure or high coolant temp.
Why is my check engine light on in my Western Star 5700XE?
The check engine light (MIL) is triggered by the Detroit Diesel ECM for emission or engine performance issues. It may require a diagnostic scan to pinpoint the fault.
How do I reset the DPF regeneration light on a 5700XE?
If the DPF light is flashing, drive at highway speeds to initiate passive regeneration. If solid or persistent, the filter may need professional cleaning or replacement at a dealer.
What should I do if the ABS light stays on?
The ABS light indicates a fault in the anti-lock braking system. Standard brakes still work, but have the system checked soon to ensure safe braking in slippery conditions.
Why does my air brake pressure light come on?
It means air pressure in the brake system is too low. Check for leaks in air lines or compressor issues. Build pressure by idling; if it doesn't rise, do not drive.
How often should I check the water-in-fuel light?
The light activates when water is detected in the fuel separator. Drain the separator regularly as part of maintenance to avoid fuel system damage in your 5700XE.