Oil Temp Gauge issue

Wiesbaden

Update: No problems with gauge since checking sensor, replacing battery and discharging system. Never brought the car back to the dealership to replace the gauges.

ZoomZ

ECU's are a funny bunch. Often it takes a few drives and miles while the ECU "re-learns" and resets.

I have learned to be very patient when it comes to electrical things and ECU's in cars, specially Nissans. From the early OBDI in my 1996 D21 P/U to my 06'Xterra, 13' Murano and 17' 370Z. They can be a headache, but predictable.

I drove that D21 Hardbody for 350,000KM's and 21 years the only CEL I got was for an O2 sensor. Sometimes simplicity is best policy. Never changed a light bulb on that truck!!!

Rusty

When car batteries start to go south. It will do strange things to the ECU. Most ECU's will shut down at 10.5 volts to protect themselves. They don't like voltage spikes either. When starting with a bad battery. You will get low voltage followed by a voltage spike after starting. The most sensitive part of the ECU will react to the voltage spike. In OP's case. It was the oil temp gauge. Hard to figure out at times.

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