The Ford Transit 150 is a versatile diesel van or pickup that features a comprehensive instrument cluster with color-coded warning lights to keep you informed. Red indicators demand immediate attention, amber signals caution, and green/blue lights indicate active systems or operational status.
Ford Transit 150 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Check Engine (MIL) | AMBER | This light on a Transit 150 diesel signals an emission or drivetrain fault; it may affect turbo boost or DPF regeneration. | Schedule diagnostic scan; if flashing, reduce load and seek service immediately. | |
| Glow Plug / Preheat | AMBER | Illuminates when the glow plugs are heating the cylinders; on a Transit 150 it stays on longer in cold climates. | Wait until the light goes out before cranking the engine. | |
| DPF / Regeneration | AMBER | Indicates the diesel particulate filter is clogged and needs active regeneration; on the Transit 150, this often occurs at highway speeds. | Drive at sustained highway speed (above 40 mph) for 20-30 minutes to clear the filter. | |
| DEF / AdBlue | AMBER | Low diesel exhaust fluid level; on the Transit 150, the system will eventually limit speed to 50 mph if ignored. | Refill DEF tank with approved fluid; consult owner manual for capacity. | |
| Water in Fuel | AMBER | Detects water contamination in the fuel system; on the Transit 150, this can damage the high-pressure pump. | Drain the water separator located near the fuel filter; if persistent, replace fuel filter. | |
| Engine Oil Pressure | RED | Low oil pressure warning; on the Transit 150, this can be due to low oil level or a failing oil pump. | Stop engine immediately, check oil level, and top up if low; do not restart if light remains. | |
| Battery / Charging | RED | Indicates a charging system fault; on the Transit 150, the alternator belt is a common failure point. | Check belt tension and alternator output; get electrical system tested. | |
| Coolant Temperature | RED | Engine overheating; on the Transit 150, this often stems from a faulty thermostat or coolant leak. | Pull over safely, turn off engine, allow to cool; check coolant level and radiator fan operation. | |
| Transmission Temp | RED | Automatic transmission fluid overheating; on the Transit 150, this may occur when towing heavy loads uphill. | Stop and let transmission cool in neutral; reduce load and avoid prolonged heavy towing. | |
| Brake System | RED | Indicates a fault in the brake system; on the Transit 150, it can signal low brake fluid or a leak. | Check brake fluid level; if low, inspect for leaks and top up; have brakes inspected before driving. | |
| ABS | AMBER | Anti-lock braking system malfunction; on the Transit 150, wheel speed sensor damage is a common cause. | Standard brakes still work; have ABS system diagnosed at a service center. | |
| Parking Brake | RED | Parking brake engaged or fault; on the Transit 150, the light also warns if the brake is not fully released. | Release parking brake fully; if light stays on, check brake cable adjustment. | |
| Tire Pressure (TPMS) | AMBER | Low tire pressure detected; on the Transit 150, the recommended pressure is 55 psi rear (when loaded). | Check and inflate tires to recommended pressures; reset TPMS after adjustment. | |
| Airbag (SRS) | RED | Supplemental restraint system fault; on the Transit 150, this could indicate a faulty seatbelt pretensioner. | Have the airbag system inspected immediately; do not ignore as it may disable airbags. | |
| Seat Belt | RED | Reminds the driver to fasten seat belt; on the Transit 150, the chime will sound until buckled. | Fasten seat belt; light should turn off. | |
| Low Fuel | AMBER | Fuel level low; on the Transit 150, the low-wool warning activates with about 2 gallons remaining. | Refuel as soon as possible to avoid running out and needing to prime the diesel system. | |
| High Beam | BLUE | High-beam headlights are on; on the Transit 150, this is a standard blue indicator. | No action needed; dim when approaching other traffic. | |
| Door Open | RED | Indicates a door (or sliding side door) is ajar on the Transit 150. | Check all doors and close firmly. | |
| Washer Fluid Low | AMBER | Low windshield washer fluid level; on the Transit 150, the reservoir holds about 1.5 gallons. | Fill with washer fluid; use a winter blend in cold climates. |
19 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Check Engine (MIL) Flashing
Common causes
- Catalytic converter damage risk
- Engine misfire
- Fuel system malfunction
What to do
For Ford Transit 150, cease heavy load operation immediately; reduce speed and get to a dealer; a flashing MIL can cause expensive catalyst failure if ignored.
Low Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
On the Transit 150, stop the engine right away, check oil level with dipstick, and top up with 5W-20 diesel oil; if light persists, have oil pressure tested at a shop.
Brake System Failure
Common causes
- Brake fluid leak
- Worn brake pads
- ABS module fault
What to do
For Transit 150, check brake fluid reservoir; if low, inspect for leaks around calipers or lines; do not drive if pedal feels soft, tow to service center.
Transmission Overheating
Common causes
- Heavy towing
- Low transmission fluid
- Cooler blockage
What to do
In a Transit 150, pull over and shift to neutral, let engine idle for a few minutes; reduce load and avoid overdrive if towing; have transmission serviced if recurring.
DPF Clogged
Common causes
- Short trips without regen
- Excessive idling
- Faulty EGR valve
What to do
Drive the Transit 150 on a highway at steady 50-60 mph for 30 minutes to initiate regeneration; if light persists, forced regen at dealer needed.
Frequently Asked Questions
Why does my Transit 150 glow plug light stay on for so long?
On a cold start in winter, the glow plugs may need up to 10 seconds to heat; this is normal for a diesel Transit 150. Wait until the light turns off before cranking.
Can I disable the DPF regeneration warning?
No, ignore the DPF light could lead to limp mode or expensive repairs. The Transit 150 requires a regen cycle; you can manually initiate it through the menu if needed.
The check engine light came on after refueling, what should I do?
Often the gas cap is loose. On a Transit 150, tighten the cap and drive a few miles; the light may clear. If not, have the system scanned for Diesel Exhaust Fluid (DEF) issues.
What does the red battery light mean while driving?
It means the alternator isn't charging. In the Transit 150, the serpentine belt often slips or breaks; you have limited battery range, so head to a repair shop nearby.
The ABS light flickers intermittently, is it a problem?
Yes; wheel speed sensors on the Transit 150 are exposed and can get dirty or damaged. Have them cleaned or replaced; your standard brakes still work but ABS may not engage in an emergency.
How do I reset the oil change reminder?
On a Transit 150, turn ignition on, press brake and accelerator together for 30 seconds; the message should reset. Otherwise consult the owner manual or dealer.