The executive version of the es300h introduced in mid-June last year currently has a driving mileage of just over 7000 kilometers, and the first and second guarantees are done according to time nodes. After finishing the first insurance project, I ran a quasi-long distance journey. It took a week-long driving tour from Lanzhou to Longnan in August last year. The round trip journey was more than 1000 kilometers. Most of the rest of the time I traveled to and from work in the city, with a round trip of about 20 kilometers. The vehicle is in good condition at present, and no phenomenon of increasing engine oil and emulsifying as mentioned in the recent forum has been found!
The outbreak of the COVID-19 epidemic before the Spring Festival destroyed many of my plans and ideas this year, and the self-driving tour activities that I discussed with my fellow riders were temporarily unable to take place. However, there are losses and gains. The time spent visiting forums has increased. When I have nothing to do, I will explore some vehicle-related problems, such as installing a hidden driving recorder yourself, installing an automatic car lock and window closing device. Recently, there was a rider at the MoC who had been running the ES Executive Edition for more than a year. He said that the card key he had been using all the time would remind him that the battery power was low when he got on the car. He suggested replacing the battery, but he didn’t know how to do it. I checked some information and said that the average card key battery needs to be replaced in about a year, and the ordinary key needs to be replaced in about 3 years, so it is very convenient to replace it yourself. Today, I happened to have the card key with me, so I tried to disassemble it. It was really simple. Here is how to replace the battery of the card key.
1. Introduction to my car and its usage:
My car!
Executive version of supersonic titanium silver!
Lexus comes with its own G-BOOK driving software, which is very practical. It shows that it has driven 7093 kilometers, and the average fuel consumption after this refueling is 5.3 liters per 100 kilometers.
It shows that the average fuel consumption after running 7,000 kilometers after picking up the car is 4.9 liters per 100 kilometers, which is quite satisfactory.
It shows that 588 kilometers have been traveled since March, and the average fuel consumption is 5.4 liters per 100 kilometers, and the fuel consumption ranking is still high.
2. Introduction to the method of replacing batteries with card keys!
My executive card key.
Use a blade or a relatively thin linear screwdriver to pry up the battery cover (the middle part of the circle). After prising both sides and sides, pull it out and come down.
Pull out the battery cover.
Pull out the rear front (positive pole of the battery).
Pull out the back side (negative pole of the battery).
Remove the battery. The battery is very thin, about 1mm thick. It’s Panasonic and is sold on a certain B.
Reinstall the battery and plug in the battery cover the same way.
Isn’t it easy to change the battery and restore it to the original?
3. The card key has a mechanical key on it, which can be taken out and used in emergencies according to the following methods!
Press down on the mechanical key card head in the ring with something slightly pointed.
Pull out the mechanical key.
This is a mechanical key that can be used in emergencies when the battery is dead.
When you retract the original path, you will recover.
BlairLancelot 
5 
April 1, 2024 
