Tell-Tales (TTS)
Never miss an important vehicle warning again
Every modern vehicle continuously monitors its critical systems.
Whenever a fault, warning or advisory condition occurs, the vehicle informs the driver using dashboard Tell-Tales.
Unfortunately, these warnings often remain inside the vehicle.
The Squarell Tell-Tales Parameter Group makes these warnings available to fleet operators in real time, allowing maintenance departments to react before minor problems become costly breakdowns.
Why Tell-Tales matter
Fleet operators report that almost every vehicle generates at least one Tell-Tale notification every week.
Some warnings simply require attention.
Others indicate serious faults that may lead to vehicle downtime or unsafe operating conditions.
Receiving these warnings remotely allows maintenance planning before the vehicle arrives at the workshop.
More than the standard vehicle warnings
Most OEMs provide only the five mandatory Tell-Tales defined by legislation.
The Squarell Tell-Tales Parameter Group extends this significantly.
Depending on the available vehicle information, Squarell generates up to 34 harmonised Tell-Tales, giving fleet operators a much more complete picture of vehicle health.
Fleet managers say that each vehicle receives at least one Tell-Tales message per week.
Specifications
Name: Tell-Tales
Header: $TTS
Subscription: Yes
Solution: Uptime
Trigger: On Event
Output port: Selectable
Typical Applications
Typical Applications:
- Preventive Maintenance
- Workshop Planning
- Remote Diagnostics
- Vehicle Health Monitoring
- Driver Support
- Fleet Operations
- Breakdown Prevention
- Service Planning
Key Parameters
Brakes
- Parking Brake
- Brake failure/brake system malfunction
- Anti-lock brake system failure
- Worn brake linings
- Retarder
- Advanced emergency braking system
- EBS
Busses
- Provision for the disabled or handicapped persons
- Articulation
- Stop Request
- Pram request
- Bus stop brake
- Raising
- Lowering
- Kneeling
Cooling
- Cooling air conditioning
- ACC
Driver
- Airbag
- Turn signals
- Hatch open
- Fuel level
- Park Heating
- Windscreen washer fluid/windshield washer fluid
- AdBlue level
- Seat belt
- Lane departure indication
- Tachograph indication
Electrical
- Battery charging condition
- Electric motor failures
- High Voltage Battery Warning
- High Voltage System Warning
- Battery Temperature Warning
- Turtle Mode (reduce power)
- Battery Cooling System Active
Engine
- Engine coolant temperature
- Engine oil
- Engine / Mil indicator
- Engine oil temperature
- Engine oil level
- Engine coolant level
- Engine Emission system failure (Mil indicator)
- Air filter clogged
- Engine emission filter (Soot Filter)
Lights
- High beam, main beam
- Low beam, dipped beam
- Position lights, side lights
- Front fog light
- Rear fog light
- Brake lights
Trailers
- Trailer connected
- ABS Trailer 1,2
- EBS Trailer 1,2
Transmission
- Transmission fluid temperature
- Transmission failure/malfunction
Vehicle
- Height Control (Levelling)
- ESC indication
- Auxillary air pressure
- ESC switched off
- Multiplex System
Warnings
- Hazard warning
- Service, call for maintenance
- Tire failure/malfunction
- Malfunction/general failure
- Steering fluid level
- Steering failure
- Engine compartment temperature
- Fuel filter differential pressure
- Lane departure warning switched off
- AdBlue tampering
The complete Parameter Group and parameter definitions are available to Squarell partners.
Business Value
The Tell-Tales Parameter Group transforms dashboard warning lamps into actionable fleet intelligence.
Instead of relying on drivers to report warning lights, fleet managers receive immediate notification when important vehicle warnings occur.
This enables earlier maintenance planning, reduces unexpected breakdowns and increases overall fleet availability.
Why Squarell?
Standard telematics systems often provide only a limited number of OEM warning indicators.
Squarell combines information from multiple vehicle networks to generate a much richer set of harmonised Tell-Tales.
The result is earlier fault detection, better maintenance planning and improved operational reliability across mixed fleets.
Every OEM supports the mandatory Tell-Tales. Squarell goes far beyond that.
Did you know?
Did you know?
Fleet operators report that almost every vehicle generates at least one Tell-Tale warning every week.
Ignoring these warnings may result in unnecessary downtime, increased repair costs or reduced vehicle safety.
The Squarell Tell-Tales Parameter Group ensures these warnings are no longer confined to the dashboard—they become part of your fleet intelligence.
