Hello, I have a 96’er 850 LW 2.5 10v. The ABS lamp lights permanently. The employee of the Bosch service, where I was to fill up the air conditioner, kindly hung his diagnostic device on it and said ABS sensor at the rear right and ABS hydraulic block were broken. But with the hydraulic block he would not believe, probably it would only be the wheel sensor. But more did not give his diagnostic device. At the friendly Volvo dealer I then had read out more. Result: ABS control unit defective. The very competent mechanic (same 1×850 and 1xV70) said that this was normal. The car dealer wants to install me a new one. Thanks to you I know: this can be repaired. At eBay someone takes 99,00 Euro and makes a good impression (www.ebay.de/itm/2813164977 What is your advice? Greeting Jens