The Peterbilt 567 is a heavy-duty vocational truck designed for demanding applications like construction and logging. Its instrument cluster provides clear warnings to ensure safe operation. Understanding these lights helps prevent costly downtime and keeps your 567 running reliably.
Peterbilt 567 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | This red light in your Peterbilt 567 signals a critical system failure that requires you to stop the engine as soon as safe. | Stop the truck safely, turn off the engine, and consult the message display. | |
| Master Caution | AMBER | An amber caution on your 567 alerts you to a non-critical fault that should be checked soon to avoid escalation. | Check the information display for details and schedule service. | |
| Check Engine (MIL) | AMBER | This light on your Peterbilt 567 indicates the engine control module has detected an emissions or performance issue. | Have the engine diagnosed by a qualified technician to prevent reduced power or damage. | |
| Engine Oil Pressure | RED | Low oil pressure in your 567 can cause severe engine damage; this red light means oil pressure is critically low. | Stop the engine immediately, check oil level, and look for leaks. | |
| Battery / Charging | RED | This red light in your Peterbilt 567 signals a charging system fault, which can leave you stranded. | Check alternator belt and battery connections; have system tested. | |
| Coolant Temperature | RED | Engine coolant in your 567 is overheating; continued operation risks major engine failure. | Stop engine, let it cool, check coolant level and for leaks. | |
| Transmission Temp | AMBER | High transmission fluid temperature in your 567 can shorten transmission life. | Reduce engine load or stop to let the transmission cool down. | |
| Brake System | RED | This red light on your Peterbilt 567 indicates a brake system fault, such as low fluid or worn pads. | Check brake fluid level and inspect brake components before driving. | |
| ABS | AMBER | The ABS light on your 567 means the antilock braking system has a malfunction, but standard brakes still work. | Drive carefully and have the ABS inspected as soon as possible. | |
| Parking Brake | RED | This red light shows that the parking brake on your 567 is engaged. | Release the parking brake before attempting to move the truck. | |
| Tire Pressure (TPMS) | AMBER | Low tire pressure detected on your Peterbilt 567 can affect fuel economy and safety. | Check and inflate tires to the recommended pressure. | |
| Seat Belt | RED | The seat belt reminder on your 567 indicates the driver or passenger belt is not fastened. | Fasten seat belts for all occupants. | |
| Glow Plug / Preheat | AMBER | Glow plugs are heating in your 567 to assist cold starting. | Wait for the light to turn off before cranking the engine. | |
| DPF / Regeneration | AMBER | The diesel particulate filter in your 567 needs regeneration to clear soot buildup. | Drive at highway speeds or perform a stationary regeneration per owner's manual. | |
| DEF / AdBlue | AMBER | Low DEF level or system fault in your 567 will eventually reduce engine power. | Refill DEF tank or service the DEF system promptly. | |
| Water in Fuel | AMBER | Water has been detected in the fuel/water separator of your 567. | Drain the water separator as described in the maintenance manual. | |
| Low Fuel | AMBER | Fuel level in your 567 is low; running out can damage the fuel system. | Refuel as soon as possible. | |
| High Beam | BLUE | The high beam headlights on your 567 are activated. | Dim high beams when approaching oncoming traffic. | |
| Power Steering (EPS) | RED | Power steering system malfunction in your 567 makes steering difficult. | Check power steering fluid level and have the system inspected. | |
| Reduced Power (Limp Mode) | AMBER | Engine power in your 567 is reduced to prevent damage from a detected fault. | Service the vehicle as soon as possible to restore full power. | |
| Air Brake Pressure (Low) | RED | Air brake system pressure is too low in your 567 to operate safely. | Stop the truck and allow pressure to build, or check for air leaks. | |
| Engine / Exhaust Brake | GREEN | The engine or exhaust brake on your 567 is engaged to assist downhill braking. | Normal operation; can be turned off if not needed. | |
| Trailer | AMBER | A trailer fault, such as a disconnected ABS or lights, is detected on your 567. | Check trailer connections and repair as needed. | |
| High Exhaust Temp (HEST) | AMBER | Exhaust temperature in your 567 is elevated during DPF regeneration. | Avoid parking over dry grass or combustibles; no driver action needed. | |
| Washer Fluid Low | AMBER | Windshield washer fluid level in your 567 is low. | Refill the washer fluid reservoir. |
25 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Oil Pressure Warning
Common causes
- Low engine oil level
- Oil pump failure
- Clogged oil filter
What to do
Stop the Peterbilt 567 immediately. Check oil level and add if low. If oil is full, do not restart; have a technician inspect the oil pump and filter.
Coolant Temperature Warning
Common causes
- Low coolant level
- Broken belt or radiator fan
- Thermostat stuck closed
What to do
Pull over safely and let the 567 idle for a few minutes. Check coolant level (when cool) and look for leaks. If overheating persists, have the cooling system serviced.
Low Air Brake Pressure
Common causes
- Air leak in brake lines
- Failed air compressor
- Drained air tanks
What to do
Stop the truck and allow the engine to run to build air pressure. If pressure does not rise, check for audible air leaks and have the air system repaired.
Battery / Charging System Failure
Common causes
- Alternator failure
- Loose or corroded battery cables
- Bad battery
What to do
Check battery connections and belt. If the light stays on, the alternator may need replacement; seek service to avoid being stranded.
Reduced Power / Check Engine
Common causes
- DEF system fault
- DPF clogged
- Sensor failure
What to do
The 567 has entered limp mode. Check for recent regen or DEF warnings. If no obvious cause, have the engine diagnosed with a scan tool to clear the fault.
Frequently Asked Questions
What does the check engine light mean on my Peterbilt 567?
It indicates the engine computer has detected a fault that could affect emissions or performance. Have the code read by a technician to identify the specific issue.
How do I perform a DPF regeneration on the 567?
If the DPF light is on, drive at highway speeds (above 45 mph) for 20-30 minutes to initiate passive regen. If that doesn't work, use the stationary regen switch per the manual.
Why is my ABS light on but the brakes work fine?
The ABS system has a fault—often a wheel speed sensor issue. Standard brakes still function, but the antilock feature is disabled. Have it diagnosed to restore full safety.
What should I do if the low air pressure warning comes on while driving?
Find a safe place to stop immediately. Let the engine run to build air pressure. If pressure stays low, there is a leak—do not drive until repaired.
How often should I drain the water separator on my 567?
Check it daily during pre-trip inspection. Drain the separator when the water-in-fuel light comes on or as part of regular maintenance to prevent fuel system damage.