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Mercedes Benz with electronic problems, the vehicle won't start, is totally torn apart and is actually a total economic write-off. The electronics have water damage, the electronic ignition lock EZL is also defective and attempts have already been made to replace the control units, unfortunately without success. In this case too, I accepted the challenge and repaired the vehicle. With the help of a circuit diagram and various cleaning products from Kontakt Chemie, I repaired the vehicle and eliminated all errors. This video is not a universal repair manual but shows that this type of damage can still be repaired at a reasonable cost. Ultimately, the well-known relay in the fuse box was defective. The car has now passed its MOT and is in use by me. The Mercedes is a W203 C230 Kompressor with 196 HP. If you have any questions, you can also find me on Instagram and Facebook #mrselfmaker Sorry for the sometimes poor sound quality and the editing errors, but unfortunately some of the images were damaged and I could not save them. Here are the links to the products: Contact spray K60: https://amzn.to/3GP6Eoy https://amzn.to/3Xg8tjv https://amzn.to/3k4Dit8 Cleaner for electronics and plugs Contact WL: https://amzn.to/3CBVzEF https://amzn.to/3itozaX The launch tester: https://amzn.to/3ip3fDk https://amzn.to/3ZquKgs Affiliate links/advertising links The links marked with an asterisk (*) are so-called affiliate links. If you click on such an affiliate link and make a purchase via this link, I receive a commission from the online shop or provider in question. The price does not change for you.