The Ford Super Duty F-750 instrument cluster includes a comprehensive set of warning and indicator lights tailored for heavy-duty diesel operation. This guide helps you quickly interpret each symbol specific to your F-750, ensuring safe and efficient vehicle management.
Ford Super Duty F-750 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A serious system fault has been detected in your F-750, requiring an immediate safe stop. | Pull over as soon as it is safe, shut down the engine, and consult your dealer. | |
| Check Engine (MIL) | AMBER | The engine control system has detected a malfunction in your F-750's emissions or powertrain. | Reduce speed, have the system diagnosed as soon as possible. | |
| Engine Oil Pressure | RED | Oil pressure is critically low in your F-750's 6.7L Power Stroke diesel engine. | Stop the engine immediately and check oil level; do not restart until resolved. | |
| Battery / Charging | RED | The charging system is not maintaining battery voltage in your F-750. | Turn off all electrical loads if possible and have the alternator and battery tested. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded safe operating range in your F-750. | Stop the engine and allow it to cool; check coolant level and fan operation. | |
| Transmission Temp | RED | Transmission fluid temperature is too high in your F-750's TorqShift heavy-duty automatic. | Stop the vehicle, shift to neutral, and idle until temperature drops. | |
| Brake System | RED | A fault in the brake system has been detected, possibly low fluid or hydraulic issue in your F-750. | Stop immediately and check brake fluid level; have brakes inspected before driving. | |
| ABS | AMBER | The Anti-lock Brake System on your F-750 is not functioning properly. | Normal braking still works; have ABS serviced at your earliest convenience. | |
| Parking Brake | RED | The parking brake is engaged on your F-750, or a system fault exists. | Release the brake pedal/lever before driving; if light stays on, check parking brake switch. | |
| Tire Pressure (TPMS) | AMBER | One or more tires on your F-750 are significantly underinflated. | Check and adjust tire pressures to the recommended values on the door placard. | |
| Airbag (SRS) | RED | The supplemental restraint system in your F-750 has a fault. | Have the airbag system inspected by a dealer immediately. | |
| Seat Belt | RED | The driver's seat belt in your F-750 is not fastened while the vehicle is moving. | Fasten your seat belt immediately. | |
| Glow Plug / Preheat | AMBER | Glow plugs are active to aid cold starting of your F-750's diesel engine. | Wait until the light turns off before starting the engine. | |
| DPF / Regeneration | AMBER | The diesel particulate filter is cleaning itself (regeneration) on your F-750. | Continue driving normally; if flashing, take immediate action per owner's manual. | |
| DEF / AdBlue | AMBER | Diesel Exhaust Fluid level is low or a system fault exists in your F-750. | Refill DEF tank with approved fluid; if light persists, service the SCR system. | |
| Water in Fuel | AMBER | Water has been detected in the fuel system of your F-750's diesel engine. | Drain the water separator immediately to prevent fuel system damage. | |
| Low Fuel | AMBER | Fuel level is below approximately 1/8 tank on your F-750. | Refuel as soon as possible to avoid running out of diesel. | |
| High Beam | BLUE | The high-beam headlights are turned on for your F-750. | Dim when approaching other vehicles to avoid glare. | |
| Power Steering (EPS) | RED | The electric power steering system on your F-750 has a fault. | Steering will be heavy; drive carefully and have the system repaired. | |
| Reduced Power (Limp Mode) | AMBER | Engine power is reduced to protect the powertrain on your F-750. | Reduce load and speed; have the vehicle diagnosed promptly. | |
| Engine Oil Temperature | RED | Engine oil temperature is critically high in your F-750's diesel engine. | Stop the engine and allow it to cool; check oil level and cooling system. | |
| Air Filter | AMBER | The engine air filter on your F-750 requires replacement or cleaning. | Inspect and replace the air filter as needed. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter/water separator needs service on your F-750. | Replace the fuel filter and drain any water according to maintenance schedule. | |
| Work Lights | GREEN | The auxiliary work lights on your F-750 are turned on. | Turn off when not needed to conserve battery. | |
| Differential Lock | AMBER | The rear differential lock on your F-750 is engaged or a fault exists. | Disengage when on high-traction surfaces; if flashing, have system checked. | |
| PTO Engaged | GREEN | The power take-off on your F-750 is activated and running equipment. | Ensure PTO is disengaged before driving on public roads. | |
| Air Brake Pressure (Low) | RED | Air brake system pressure is too low in your F-750 (if equipped with air brakes). | Stop immediately and allow compressor to build pressure; do not drive until normal. | |
| Engine / Exhaust Brake | GREEN | The exhaust brake active on your F-750 to assist downhill speed control. | Use on long descents to reduce brake wear; disengage on slippery roads. | |
| Trailer | GREEN | A trailer is detected and connected to your F-750's tow system. | Verify trailer lights and brakes before departure. | |
| Door Open | RED | A door on your F-750 is ajar or not fully closed. | Check all doors and close securely before driving. | |
| High Exhaust Temp (HEST) | AMBER | The exhaust system temperature is elevated during regeneration or heavy load on your F-750. | Avoid parking over dry grass or flammable materials. | |
| Washer Fluid Low | AMBER | Windshield washer fluid level is low in your F-750. | Refill the washer reservoir with approved fluid. |
32 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
- Clogged radiator or fan failure
What to do
For your F-750, check coolant expansion tank when cool; inspect radiator for debris; if issue persists, have cooling system serviced by a Ford dealer.
Transmission Overheating
Common causes
- Overloading
- Low transmission fluid
- Towing beyond capacity
What to do
In your F-750, reduce load or shift to neutral to cool; check transmission fluid level with engine running; avoid prolonged heavy towing.
Low Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Immediately stop your F-750's diesel engine; check oil level on dipstick; if full but light stays on, do not restart and get towed to a service center.
Brake System Failure
Common causes
- Brake fluid leak
- Worn brake pads
- Hydraulic system fault
What to do
For your F-750, check brake fluid reservoir level; if low, inspect for leaks; Do not drive until brakes are fully functional.
Air Brake Low Pressure
Common causes
- Air compressor fault
- Air leak in system
- Moisture in air lines
What to do
On your F-750 with air brakes, wait for pressure to build; if it doesn't, inspect for leaks and drain air tanks; have system repaired before operation.
Frequently Asked Questions
What does the DPF regeneration light mean on my F-750?
The DPF regen light indicates that the diesel particulate filter is cleaning itself. On your F-750, you may notice a slight increase in exhaust temperature and engine idle speed during active regeneration. Drive normally; if the light flashes, pull over and follow the manual's forced regen procedure.
Is it safe to drive with the ABS light on?
Yes, your F-750's standard brakes still work, but anti-lock function is disabled. Drive cautiously on slippery surfaces and have the ABS system diagnosed soon to restore full stopping performance.
Why does my F-750 show 'Water in Fuel' even after draining?
If the light stays on, water may still be in the system or the sensor could be faulty. On your F-750, drain the separator again and ensure you're using clean diesel. If the light remains, have the water separator and sensor checked.
Can I ignore the Check Engine light if the truck runs fine?
No. In your F-750, the Check Engine light could indicate a minor emissions issue that may worsen over time or affect fuel economy. Have the fault code read promptly to avoid potential limp mode or failed inspections.
What should I do if the DEF light comes on while towing?
The DEF light warns of low fluid or a system fault. Your F-750's engine will not start after a certain number of miles if DEF runs out. Keep spare DEF on hand for long hauls and refill at the next opportunity.
Why does my high exhaust temperature light stay on after parking?
The light may stay on briefly during post-turndown regeneration. For your F-750, ensure you do not park over dry grass or flammable materials. If it stays on longer than 15 minutes, have the system inspected for an incomplete regen cycle.