How do I restore Mercury engine data on a Simrad display after a system update?
My Mercury engine gauges used to appear on my Simrad screen through an interface, but they stopped working. The Simrad software has since been updated and now the Mercury page has disappeared altogether. How do I get it back?
Answer
To restore Mercury engine data, get the Simrad to recognise the engine interface, then restore the Mercury page or reselect the engine data sources. As your gauges stopped working before the update, check interface power and network detection first; restoring the screen icon alone may leave the gauges blank.
1. Identify the Mercury interface
You do not normally upload a gauge to the Simrad. The interface sends engine data to the display, which shows it on a dedicated Mercury page or standard engine instruments.
Find the interface box, usually behind the helm, and photograph its label and connections. Identify which type is fitted:
- VesselView Link: provides Mercury integration on compatible Simrad displays, including a dedicated VesselView interface.
- SmartCraft Connect: compatibility depends on the gateway, Simrad model and installed software. Its setup is not interchangeable with VesselView Link.
- A basic SmartCraft-to-NMEA 2000 gateway: may supply engine readings to standard instrument pages without providing a dedicated Mercury application.
Record the Simrad model and software version from its About or system information screen. An older NSS, an NSS evo3 and a GO-series display may have different menus and integration options. Since yours worked previously, establish what is fitted before buying anything.
2. Check interface detection
With the engine stopped, turn on the ignition and power up the Simrad and NMEA 2000 network. Some interfaces only appear with the ignition on; the engine need not be running.
On many Simrad models, look under Settings, Network, Device list. The wording varies with software. Look for VesselView Link, a Mercury gateway or the interface manufacturer's name.
If the interface is absent, work through these checks:
- Check the interface supply and any inline fuse. Use the fuse rating specified for the installation.
- Check power to the NMEA 2000 backbone. A working chartplotter does not prove that the separately powered network is working.
- Inspect the interface drop cable, T-piece and SmartCraft connection for loose plugs, corrosion or damaged pins.
- Switch off the display, ignition and network supply, then restore power and check the device list again.
Switch off ignition and network power before unplugging connectors. Keep tools clear of exposed battery terminals.
If other network devices are also missing, check the backbone supply and connections first. A conventional NMEA 2000 backbone should have a 120-ohm terminator at each end. Do not add terminators to individual instrument drop cables.