Re: New Leganza owner here....
I have the same problem in my 2000 Laganza. Temp gauge starts rising all the way to the top and then back down. But engine is not hot, plenty of fluid, no leaks, no steam. Dealer said there may be a sensor shorting out.
Also, I have noticed, while I am driving, the engine has a loss of power, RPM's drop a little, and then it is fine. Then the ABS and Airbag warning lights will come on but just temporarily. Sometimes this happens allot and then sometimes not at all. This happens with and without the air conditioning on.
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