General & Installation
Does VisiCan Display come with a warranty?
VisiCan Displays are covered by a 2-year manufacturer warranty starting from the date of purchase.
The warranty covers manufacturing and manufacturer-related defects.
The following are not covered under warranty:
- Liquid damage
- Physical damage to the device
- Cracked or broken plastic housing
- Opening the device by the user
- Any unauthorized intervention or modification
- Incorrect connection caused by applying physical force, even though connectors are keyed and cannot be inserted incorrectly under normal conditions
Is the installation process simple?
Most of our users report completing the installation themselves within 30–45 minutes.
Basic hand skills and standard trim removal tools are sufficient to remove the air vent, install the VisiCan Display, and connect the cables to the OBD port.
No electrical or power tools such as drills or soldering equipment are required.
Do I need to cut or modify my car’s air vent?
No cutting or drilling is required.
If desired, the installation steps can be reversed and the air vent can be returned to its original factory condition.
Does VisiCan ship with a new air vent?
No. You will continue using your vehicle’s original air vent.
VisiCan Displays are supplied as an ABS plastic housing designed to replace the internal vent fins.
Does VisiCan work with modified or tuned vehicles?
Yes. VisiCan Displays are frequently used on Stage 2 and higher modified vehicles, including track-prepared cars (ECU tuning, exhaust systems, etc.).
They are also used by customers who want to monitor data on completely stock vehicles.
Data, Performance & Compatibility
How fast is the data refresh rate?
Displayed values on the VisiCan Display are refreshed in less than 1 millisecond (1 ms).
However, the actual data update rate depends on the ECU response time.
To maintain stable ECU–CAN bus communication, VisiCan intentionally inserts a delay of 8–15 ms between consecutive ECU queries, even when the ECU is capable of responding faster.
- Pre-2012 VAG vehicles (KWP protocol):
A measuring block containing 4 values is typically returned within ~35 ms. - 2012+ VAG vehicles (UDS protocol):
ECU responses are nearly instantaneous, but VisiCan still applies an 8–15 ms safety delay. - PSA, Hyundai, Honda, Renault:
ECUs respond with larger data blocks; response times range from 35–180 ms, depending on the data size. - BMW / MINI vehicles:
ECU queries via OBD are answered by the ZGW within ~35 ms.
When connected directly via PT-CAN, ECUs can respond instantly; in this case, VisiCan applies an 8–15 ms delay, resulting in an effective query time of 8–15 ms per request.
Is Flex Fuel (ethanol) supported?
Yes.
4th and 5th Generation VisiCan Displays (2023+) include a dedicated Flex Fuel (ethanol) sensor input.
By installing a GM, Continental, Bosch, or similar ethanol sensor (50–150 Hz output) and connecting its signal to the VisiCan Display, ethanol content can be displayed in real time.
Do I need to purchase or connect external sensors?
No.
VisiCan communicates directly with the ECU via OBD / CAN bus and displays existing ECU sensor data.
No external sensors are required, provided your vehicle is supported.
Can I use VisiCan without OBD or CAN bus?
VisiCan Displays primarily communicate via CAN bus.
For vehicles using standalone ECUs without an OBD port (e.g., ECU Master EMU Black), VisiCan can display real-time data if the ECU provides CAN bus output and the appropriate VisiCan firmware is used.
For BMW E-Series vehicles, CAN bus support on the OBD port is available from late 2007 / early 2008 onward.
Pins 6 and 14 must be present on the OBD connector.
(Except for VAG 1.8T vehicles using ME7.5 ECUs, VisiCan Displays have firmware / hardware modules to communicate via K-Line.)
Ownership, Support & Updates
I sold my car but kept my VisiCan Display. How can I use it on my new car?
If a compatible VisiCan model exists for your new vehicle, you can send your invoiced, functional, warranty-coveredVisiCan Display to us.
We can replace the necessary components (display, ABS housing, ECU communication firmware, etc.) according to our after-sales service pricing, allowing you to continue using it on your new vehicle.
I bought a second-hand VisiCan or it came with my car. Can I still get support?
Yes.
If the device is still under manufacturer warranty, warranty services remain valid regardless of ownership.
For current-generation and previous-generation (under warranty) devices, firmware updates are provided free of charge via e-mail.
Technical support is also available via e-mail.
If the device is not directly compatible with your vehicle, you can purchase a new ECU communication firmware and install it using the supplied USB programming interface.
However, due to company policy, we cannot:
- Perform remote updates
- Intervene in buyer–seller disputes
- Share pricing, previous owner details, or compatibility confirmations related to second-hand transactions
Can I trade in my existing VisiCan when buying a new one?
Yes.
Customers upgrading to a new generation may receive a discount by sending in their invoiced, functional, warranty-covered VisiCan Display.
Will my existing VisiCan receive future updates (backward compatibility)?
Yes.
As company policy, we prioritize backward compatibility for new software features and add-on modules (e.g., Wi-Fi Module) with the current and previous generation devices under warranty.
All VisiCan Displays receive free software updates for 2 years from the purchase date.
Some features may be hardware-dependent and limited to newer generations (e.g., background images and boot animations on 5th Generation devices).
How can I receive firmware updates?
Firmware updates are distributed via e-mail due to device-specific matching requirements.
To request an update, please send:
- Your contact details
- A photo of the device information screen (hold the 3rd button while turning on the ignition)
to info@visicaneu.com.
Update files and instructions are typically sent within 1–3 business days.
How can I install or activate add-on software modules?
After purchasing add-on modules from our website, firmware files and installation instructions are sent via e-mail within 1–3 business days.
Installation is performed using the USB programming interface.
Can I use the Wi-Fi Module with my existing VisiCan?
Yes.
You do not need to purchase a new display.
Wi-Fi Module is compatible with:
- 4th Generation (2023–2025) VisiCan Displays with 2.0” or 2.8” screens
- 5th Generation (August 2025+) VisiCan Displays
Troubleshooting & Common Issues
One displayed value is incorrect or not updating. What could be the issue?
All displayed values are queried directly from the ECU through continuous two-way communication.
If a communication error occurs, the ECU stops responding entirely — it is not possible for only one value to fail due to communication issues.
If all other values are displayed correctly, the missing value will also be unavailable when checked using diagnostic tools such as ODIS, VCDS, ISTA, or Launch.
The AFR value does not change at startup. Why?
Most ECUs only provide dynamic AFR / O2 sensor data after exhaust gas temperature reaches 400–450°C.
Drive the vehicle gently until EGT exceeds this range.
If AFR still does not change, even when EGT is above 450°C, the issue may be related to the O2 sensor, wiring, or ECU, and should be checked using professional diagnostic tools.
Main page values disappeared. How can I fix this?
Since a feature introduced in December 2024 on 4th Generation devices, main page values are user-configurable.
In rare cases where vehicle voltage drops repeatedly (battery drain, jump starting), saved settings may be lost, causing main page values and colors to disappear.
To fix this:
- Hold the 4th button during startup to enter the settings menu
- Reconfigure and save main page values and colors
🎥 Settings Menu Usage :
My display sometimes dims or becomes dark. Why?
This may occur on 4th Generation 3.5” models.
VisiCan Displays include an electronic fuse system that protects against excessive current and temperature.
When the mainboard temperature reaches 55–60°C, brightness is reduced automatically.
If heating continues, the device may temporarily shut down.
To prevent this:
- Avoid maximum brightness during extreme heat or constant hot air blowing
- Use brightness 1–2 levels below maximum, then increase once cabin temperature stabilizes
If the issue persists even at lower brightness levels, the device may require inspection.
Please send the device securely packaged, with all accessories and a note describing the issue, to our company address.