The Kenworth T700 instrument cluster features a digital display with analog gauges for critical parameters. This heavy-duty truck is equipped with PACCAR MX-13 engine and Eaton Fuller transmission, so its warning lights are tailored to these systems. Understanding these indicators is vital for safe and efficient operation.
Kenworth T700 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault has been detected in the Kenworth T700's systems requiring immediate attention. | Safely pull over and shut down the engine; contact service. | |
| Check Engine (MIL) | AMBER | The PACCAR MX-13 engine control module has detected a fault in emissions or performance. | Reduce speed and schedule diagnosis at your Kenworth dealer. | |
| Engine Oil Pressure | RED | Oil pressure is too low for the MX-13 engine, risking severe damage. | Stop the engine immediately and check oil level. | |
| Battery / Charging | RED | The charging system is not providing adequate voltage to the batteries. | Check alternator belt and connections; drive only if necessary. | |
| Coolant Temperature | RED | Engine coolant temperature exceeds safe limit for the T700. | Stop engine and let it cool; check coolant level. | |
| Transmission Temp | AMBER | Transmission fluid temperature is high, possibly due to heavy load. | Shift to a lower gear or reduce load; if persists, stop. | |
| Brake System | RED | A fault in the air brake system or low pressure detected. | Stop immediately and inspect brake system; do not drive. | |
| ABS | AMBER | Anti-lock brake system has a fault; standard brakes still function. | Drive cautiously and have the ABS serviced soon. | |
| Parking Brake | RED | Parking brake is engaged or a fault in the system. | Release parking brake before driving; if light stays, check system. | |
| Tire Pressure (TPMS) | AMBER | One or more tires have low pressure detected by the TPMS. | Check tire pressures and inflate as needed. | |
| DPF / Regeneration | AMBER | Diesel particulate filter needs regeneration; may be in progress. | Follow regeneration instructions; if light flashes, drive to clear. | |
| DEF / AdBlue | AMBER | Diesel exhaust fluid level is low or quality issue detected. | Refill DEF tank with approved fluid soon to avoid derate. | |
| Water in Fuel | AMBER | Water has been detected in the fuel/water separator. | Drain the water separator or replace filter. | |
| Low Fuel | AMBER | Fuel level is low; range limited. | Refuel as soon as possible. | |
| High Beam | BLUE | High beam headlights are activated. | Dim when approaching oncoming traffic. | |
| Reduced Power (Limp Mode) | AMBER | Engine power is reduced due to a fault in the PACCAR powertrain. | Reduce speed and seek service immediately. | |
| Air Brake Pressure (Low) | RED | Air brake system pressure is below safe operating level. | Stop engine and allow air pressure to build; if not, call service. | |
| Engine / Exhaust Brake | GREEN | Engine brake or exhaust brake is active. | Use on downgrades to assist braking. | |
| Trailer | AMBER | Trailer ABS or connection fault detected. | Check trailer ABS and electrical connection. | |
| Door Open | RED | A door is not fully closed. | Close all doors securely. | |
| High Exhaust Temp (HEST) | AMBER | Exhaust system temperature is high during regeneration. | Avoid parking near combustibles; continue driving normally. | |
| Washer Fluid Low | AMBER | Windshield washer fluid level is low. | Refill washer reservoir. |
22 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheat
Common causes
- Low coolant level
- Fan clutch failure
- Excessive load on grade
What to do
Stop the Kenworth T700 and let the engine cool; check coolant levels and fan operation before resuming.
Low Oil Pressure
Common causes
- Low oil level
- Oil pump malfunction
- Clogged oil filter
What to do
Turn off the engine immediately; check oil level and pressure sensor; do not drive until resolved.
Air Brake Failure
Common causes
- Air leak in system
- Air compressor failure
- Low air pressure due to heavy use
What to do
Stop the truck; allow air pressure to build; if persistent, call service for Kenworth T700 air system inspection.
Battery Discharge
Common causes
- Alternator failure
- Bad battery connection
- Parasitic electrical drain
What to do
Check alternator output and battery connections; jump start only if necessary; have electrical system tested at a Kenworth dealer.
Frequently Asked Questions
What does the amber DPF light mean on my T700?
The DPF light indicates the particulate filter needs regeneration; if solid, drive at highway speeds to initiate passive regeneration; if flashing, see your Kenworth dealer for active regeneration.
How do I reset the check engine light?
Do not reset without fixing the fault; have a Kenworth technician diagnose the code and clear it after repair to prevent engine damage.
Why is my red brake light on while driving?
This indicates low air pressure; stop safely and allow pressure to build; if it stays on, inspect the brake system for leaks before continuing.
What should I do if the DEF light comes on?
Top up DEF fluid as soon as possible; if ignored, the engine will enter derate mode to protect emissions components.
How often should I check the water in fuel separator?
Daily during pre-trip inspection; drain if water is present to prevent injector damage and fuel system issues on the PACCAR MX-13 engine.