The ASV VT-70 compact track loader features a digital instrument cluster with key warning lights and indicators tailored to its hydromechanical drivetrain and Tier 4 engine. This guide helps operators understand each symbol for safe and efficient operation. Always refer to the operator's manual for detailed information.
ASV VT-70 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | The VT-70's master warning illuminates when a critical fault such as low oil pressure or high coolant temperature is detected, demanding immediate engine shutdown. | Stop the engine safely and investigate the underlying cause. | |
| Master Caution | AMBER | A non-critical system fault or maintenance reminder on the VT-70 requires prompt attention but does not require immediate engine stop. | Check the display for related messages and schedule service. | |
| Check Engine (MIL) | AMBER | The VT-70's engine control unit has detected an emissions-related or performance fault, common with Tier 4 engines. | Have the engine fault codes read by a dealer or scan tool. | |
| Engine Oil Pressure | RED | Oil pressure in the VT-70's Kubota diesel has dropped below safe operating level, risking engine damage. | Stop the engine immediately and check oil level and pressure. | |
| Battery / Charging | RED | The VT-70's alternator is not charging properly or the battery voltage is critically low for starting. | Check alternator belt and battery connections; charge or replace battery. | |
| Coolant Temperature | RED | Engine coolant temperature on the VT-70 exceeds normal range, often due to restricted radiator or low coolant. | Stop engine, let cool, then check coolant level and radiator fins. | |
| Transmission Temp | AMBER | The VT-70's hydrostatic transmission fluid is overheating, possibly from prolonged heavy load or low fluid. | Reduce load or idle to cool; check transmission fluid level. | |
| Parking Brake | RED | The parking brake on the VT-70 is engaged when the machine is in motion or the brake is not fully released. | Ensure parking brake is fully disengaged before moving. | |
| Seat Belt | RED | The VT-70's seat belt interlock indicates the operator is not buckled, inhibiting machine movement. | Fasten the seat belt before operating. | |
| Glow Plug / Preheat | AMBER | The VT-70's glow plugs are heating for cold start; wait for the light to go out before cranking. | Wait until the indicator turns off, then start the engine. | |
| DPF / Regeneration | AMBER | The VT-70's diesel particulate filter requires regeneration due to soot buildup from low exhaust temperature. | Drive the machine under load or initiate stationary regen per manual. | |
| DEF / AdBlue | AMBER | Diesel exhaust fluid level in the VT-70 is low, and may limit engine power if not refilled. | Refill DEF tank with quality fluid to restore full performance. | |
| Water in Fuel | AMBER | The VT-70's fuel/water separator has detected water, which can damage the high-pressure fuel system. | Drain the water separator and check fuel quality. | |
| Low Fuel | AMBER | Fuel level in the VT-70's tank is below 10%, risking air introduction into the fuel system. | Refuel as soon as possible to avoid priming issues. | |
| High Beam | BLUE | The VT-70's high-beam headlights are illuminated for better visibility in dark or dusty conditions. | Dim when approaching other operators or vehicles. | |
| Work Lights | GREEN | The VT-70's auxiliary work lights are powered on for nighttime or low-light operations. | Turn off when not needed to conserve battery. | |
| Beacon / Rotating Light | AMBER | The VT-70's rotating beacon is active to indicate the machine is in operation for site safety. | Ensure beacon is on when moving or working near personnel. | |
| Hydraulic Oil | RED | Hydraulic oil temperature in the VT-70 is excessive or level is critically low, risking pump failure. | Stop engine, check hydraulic fluid level and cooler cleanliness. | |
| Reduced Power (Limp Mode) | AMBER | The VT-70's engine has limited power due to a fault in the Tier 4 system to prevent damage. | Have the fault codes diagnosed; avoid heavy loads until repaired. | |
| Air Filter | AMBER | Engine air filter restriction on the VT-70 exceeds the limit, reducing performance and fuel economy. | Replace or clean the air filter element. | |
| Fuel Filter / Water Separator | AMBER | The VT-70's fuel filter is clogged or the water separator needs draining to maintain fuel flow. | Replace the fuel filter and drain the water separator. | |
| Service / Hour Meter | AMBER | The VT-70's scheduled maintenance interval is approaching or past due based on operating hours. | Perform required service as per operator's manual. |
22 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 fins
- Faulty thermostat
What to do
Park the VT-70 on level ground, allow the engine to cool completely, then check coolant level and add a 50/50 mix if low. Clean the radiator fins with compressed air and inspect the thermostat for proper operation.
Hydraulic System Failure
Common causes
- Low hydraulic fluid
- Contaminated fluid or filters
- Failed hydraulic pump
What to do
Check the hydraulic fluid level and top off with the recommended oil. Replace hydraulic filters and inspect fluid for cloudiness or debris. If pump failure is suspected, contact a service technician.
DPF Clogged
Common causes
- Excessive idling or low-load operation
- Poor fuel quality
- Failed automatic regeneration
What to do
Operate the VT-70 at high load (e.g., digging or driving uphill) to initiate passive regeneration. If the light stays on, perform a stationary regeneration per the manual or use diagnostic tool to force regen.
Track Tension Issues
Common causes
- Worn track components
- Debris lodged in undercarriage
- Improper tension adjustment
What to do
Inspect the tracks for cuts or debris and adjust tension using the grease fitting on the idler. Refer to the VT-70 manual for correct track sag measurement.
Electrical System Fault
Common causes
- Weak or dead battery
- Faulty alternator
- Loose or corroded connections
What to do
Test battery voltage with a multimeter; recharge or replace if below 12.4V. Check alternator output at idle (should be 13.5-14.5V). Clean and tighten all battery and ground terminals.
Frequently Asked Questions
What does the red stop light on the VT-70 mean?
The red master warning light indicates a critical fault such as low oil pressure or overheating. Immediately stop the engine and refer to the operator's manual to diagnose the issue.
How do I start the VT-70 in cold weather?
Turn the key to the 'on' position and wait for the glow plug indicator to turn off (typically 5-10 seconds), then crank the engine. If the engine is hard to start, use the cold start aid (ether) only as specified in the manual.
When should I replace the fuel filter on my VT-70?
Replace the fuel filter every 500 hours or annually, whichever comes first, or sooner if the 'Fuel Filter' warning appears or there is water in the separator.
Why is my VT-70 in limp mode?
Limp mode activates when the engine control unit detects a fault that could cause damage, such as a DPF issue or sensor failure. Have the fault codes read by a dealer to identify the specific problem.
How do I check the hydraulic fluid level on the VT-70?
Park the machine on level ground with the engine off and the attachment lowered. The hydraulic tank is located behind the cab; check the sight glass for fluid within the full marks. Top off with AW 32 or 46 hydraulic oil as recommended.
What should I do if the DEF light comes on?
Refill the DEF tank with high-quality diesel exhaust fluid. If the light persists after refilling, it may signal a DEF quality or system fault requiring dealer diagnostics.