Troubleshooting guide
Nissan Altima / Nissan Altima Owners Manual / Pre-driving checks and adjustments / Request Switches / Troubleshooting guide
Verify the location of all Intelligent Keys that are programmed for the vehicle. If another Intelligent Key is in range or inside the vehicle, the vehicle system may respond differently than expected.

See also:
Three-way catalyst
The three-way catalyst is an emission control
device installed in the exhaust system. Exhaust
gases in the three-way catalyst are burned at
high temperatures to help reduce pollutants.
WARNING
...
Wheels and tires
...
Engine coolant temperature gauge
Engine coolant temperature gauge
The gauge indicates the engine coolant temperature.
The engine coolant temperature is within the
normal range when the gauge needle points
within the zone show ...
