The John Deere 5115M tractor features a comprehensive digital instrument cluster that provides critical operating information and warnings. This guide explains the meaning of each indicator light and the appropriate actions to ensure safe and efficient operation.
John Deere 5115M Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | A critical fault requiring immediate engine shutdown has been detected in the 5115M's electronic control system. | Stop the tractor safely and shut off the engine. Consult your dealer. | |
| Master Caution | AMBER | A non-critical system fault or maintenance need has been logged in the 5115M's controller. | Check the message center and schedule service soon. | |
| Check Engine | AMBER | The engine control unit has detected a fault in the emissions or performance system of your 5115M. | Contact your John Deere dealer for diagnostic service. | |
| Engine Oil Pressure | RED | Engine oil pressure is dangerously low, risking severe engine damage in the 5115M. | Stop the engine immediately and check oil level and pressure. | |
| Battery / Charging | RED | The charging system is not providing sufficient voltage to the 5115M's battery. | Inspect alternator belt and connections; have charging system tested. | |
| Coolant Temperature | RED | Engine coolant temperature has exceeded safe limits in the 5115M. | Reduce load and idle to cool; check coolant level and radiator. | |
| Transmission Temp | AMBER | The transmission oil temperature in the 5115M is higher than normal, indicating potential overloading. | Shift to a lower gear or reduce load; allow transmission to cool. | |
| Brake System | RED | A fault in the 5115M's brake system has been detected, reducing stopping capability. | Stop the tractor safely and have brakes inspected immediately. | |
| Parking Brake | AMBER | The parking brake on the 5115M is engaged; this light remains on as a reminder. | Release the parking brake before moving. | |
| Glow Plug / Preheat | AMBER | The glow plugs are preheating the 5115M's engine for cold start assistance. | Wait for the light to turn off before cranking the engine. | |
| DPF / Regeneration | AMBER | The diesel particulate filter in your 5115M requires regeneration to clean accumulated soot. | Drive at higher engine load or initiate parked regeneration per operator manual. | |
| DEF / AdBlue | AMBER | Diesel exhaust fluid level is low or the DEF system has a fault in the 5115M. | Refill DEF tank or contact dealer if fault persists. | |
| Water in Fuel | AMBER | Water has been detected in the fuel filter/water separator of the 5115M. | Drain the water from the separator bowl as described in the operator manual. | |
| Low Fuel | AMBER | Fuel level in the 5115M's tank is low. | Refuel as soon as possible to avoid running out. | |
| High Beam | BLUE | The headlights' high beam is activated on the 5115M. | Dim when approaching oncoming traffic. | |
| Work Lights | GREEN | The auxiliary work lights on the 5115M are turned on. | Turn off when not needed to conserve battery. | |
| Differential Lock | AMBER | The differential lock is engaged on the 5115M for increased traction. | Disengage when turning or on hard surfaces to prevent driveline damage. | |
| PTO Engaged | AMBER | The power take-off (PTO) shaft is engaged on the 5115M. | Disengage PTO before leaving the seat or working near the shaft. | |
| Service / Hour Meter | AMBER | A scheduled maintenance interval for the 5115M is approaching or overdue. | Perform the required service per the operator manual. | |
| Air Filter | AMBER | The engine air filter is restricted or needs replacement on the 5115M. | Replace the air filter to maintain engine performance. | |
| Fuel Filter / Water Separator | AMBER | The fuel filter requires replacement or water needs draining in the 5115M. | Replace the fuel filter and drain water separator as per maintenance schedule. |
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 level
- Clogged radiator
- Faulty thermostat
What to do
Stop the 5115M and allow engine to cool. Check coolant level and radiator fins for debris. If problem persists, contact dealer.
Low Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Shut off engine immediately. Check oil level and top up if needed. If light stays on, do not operate and have dealer inspect the 5115M's lubrication system.
Transmission Overheating
Common causes
- Overloading
- Low transmission oil level
- Clogged cooler
What to do
Reduce load or shift to a lower gear. Check transmission oil level when cool. Clean cooler fins. Allow transmission to cool before resuming heavy work.
Hydraulic System Failure
Common causes
- Low hydraulic oil level
- Contaminated oil
- Pump failure
What to do
Stop the 5115M and check hydraulic oil level. Look for leaks. If oil is foamy or dirty, change it. Contact dealer for pump issues.
DPF Regeneration Needed
Common causes
- Excessive idling
- Low exhaust temperature
- Clogged filter
What to do
Take the 5115M for a 20-minute drive at partial load. If light persists, initiate stationary regeneration per the operator manual or see dealer.
Frequently Asked Questions
What should I do if the Master Warning (red) light comes on?
Stop the tractor immediately and shut off the engine. Check the message center for the specific fault. Do not restart until the issue is resolved; contact your John Deere dealer.
How do I perform a DPF regeneration on the 5115M?
To initiate parked regeneration, park the tractor on a non-flammable surface, engage the parking brake, and follow the prompts on the display. Ensure the engine is at operating temperature and there are no other active warnings.
Why is my Check Engine light on and what should I check?
The Check Engine light indicates an engine or emission fault. Common causes include a loose fuel cap, faulty sensor, or aftertreatment issue. Have the codes read by a dealer to diagnose properly.
How do I drain water from the fuel filter on the 5115M?
Locate the water separator bowl under the hood. Open the drain valve at the bottom until clean fuel flows out. Tighten the valve. If the light stays on, the filter may need replacement.
Can I continue working with the DPF light on?
If the DPF light is amber (not red), you can continue but should perform a regeneration soon. If it turns red, stop immediately and follow the regeneration procedure to avoid filter damage.
What does the Transmission Temp light indicate?
It warns that the transmission oil is too hot. Reduce the load or shift to a higher gear to increase cooling. Avoid heavy work until the light goes off to prevent damage.