Hello,
I just finished my project of retrofitting ESP system on my Bora and I want to thank everybody who posted their knowledge on this forum and helped me to retrofit ESP on my car.
I want to share with you what I found out doing this project and not being explained here:
- If you use a new hydraulic pump after you move the jumper wire from pin 14 to pin 12, but before installing all of the sensors, in order to use your car you should code your esp controller, because it comes from the factory coded 0000000 and first time you start the car you will have the abs and brake lights blinking in the cluster and a lot of noisy beeps, that’s why it should be coded first and you can use your car and install the esp sensors later. I coded mine with 19458 and the cluster becomes quiet, of course having three DTC-s after scanning esp controller with vagcom stating that the three esp sensors missing, but again you can use your car without any problem.
- After I installed all the sensors and ESP switch and calibrated them, all the errors went out and the esp system in my car was active and ready to fulfill its duties, but without having the ESP function test triggered automatically (error 01468 in the controller), I don’t know why (maybe because I used a brand new steering wheel sensor which was perfectly centered and blocked in this position with a plastic ring) I was confused a little because I knew that after finishing all the install this ESP function test should be triggered automatically in order to finish the project, so I went for a drive test to check the system, found a portion of road with sand on it and at 40 km/h I pulled hard the wheel , drifting the car a little and the ESP was activated instantly and the ESP light in the cluster was flickering briefly. Still I wanted to perform also the ESP function test –error 01468 in the vagcom- and I found out that it can be initiate also manually , here it is how: with vagcom you select abs controller , in order to activate basic settings, you click on the coding II button input 40168 code, after that you access the basic settings and here you input 093 and click go button , block 93 is accessed and a message- ESP function test active- will be displayed. In this moment ABS light in the cluster will come on and stays on, also you will have an error code 01468 in the fault code. In order to get rid of the abs light and error code 01468 you should perform the ESP test like this : in a parking lot to have enough free space , you press hard on the brake pedal , this will trigger the test to start and the ESP light will start to blink in the cluster, you will drive the car around 20 km/h in first or second gear, in a figure 8 , if the test was performed ok both lights in the cluster abs and esp will go away meaning your ESP system is working fine.
The only problem I have now is that my brake pedal is not feeling hard like before ESP retrofit, even if I changed the brake fluid, bled the ABS pump and having around 7 cycles of opening/closing front wheels valves to complete ABS pump bleeding procedure, bled the brake system two times , one time using brake pedal depressor to keep brake pedal depressed while opening the valves FL, FR, RL, RR in this order.
I suspect , because I used a new brake master cylinder which I didn’t know that before installation should be bled on the bench first, some air is still trapped inside brake MC .
If anybody have any idea of what to do next to improve pedal feel, but without removing the brake MC to bleed it on the bench, will be very much appreciated.