Hello! I have found out, from a Renault mechanic, that if you “Just” change the brake fluid in your Renault Zoe, (Electric car). Then you don’t need to do the second part of the Brake fluid change. So, the part when you have to use a Computer/Diagnostic tool, which you connect to the Car’s OBDll socket. When you start the ABS pump and open 4 solenoid valves, with the Diagnostic Tool or a Computer. and then open the 3 air nipples on the brake booster. with a ring spanner. You don’t have to do this if you “Just” change the brake fluid. However, you must use a brake fluid bleeder. Which puts pressure in the brake system. (A plastic container, with a pump and a manometer on it. You fill it with 3-4 liters of new brake fluid, close the lid and connect the rubber hose with a plastic cap to the brake fluid container in the engine compartment of the car. And then you pump up a pressure of 1.5 Bar to 2.0 Bar. Then just Start with the Left Front Wheel. Loosen the Air Nipple, and release the Brake Fluid into a container until new Brake Fluid comes. Then close the Air Nipple. Do the same work on the Right Front Wheel, Left Rear Wheel and Right Rear Wheel. You must often keep an eye on the manometer, so that it does not drop below 1.5 Bar. You may pump up the pressure several times during the work. At least 1 time after each brake caliper. Preferably more often. Check that the brake fluid in the brake bleeder does not run out. But if you pour in 3 Liters from the beginning, in the Brake Bleeder, then it should be enough. The Renault mechanic said that there is a little less than 2 Liters of Brake Fluid in the entire Brake System of a Renault Zoe. Including the Brake Fluid Container in the Engine Compartment. ( But if you are going to change any part of the brake system, such as the ABS pump or the brake booster. Then you have to do the second part of the Brake fluid change as well. ( With the Computer or Diagnostic Tool ). But you start by doing the first part of the Brake fluid change. At the 4 brake calipers. And after that, you do the second part of the Brake fluid change ).