S-Type Electronic hand brake blocked

Hello dear Jaguar friends, still I am enthusiastic owner of an S-type built in 2002. Unfortunately I now have a malfunction of a special kind on my vehicle. For no particular reason my handbrake went on strike, it could not be solved any more and so the car was no longer ready to drive. After a call to my Wekstatt I was informed of various options to release the brake. 1.short plug (2m) before and back with the brake tightened. No success. 2. vehicle new again Start. No success. 3. Pull the connector in the rear of the case and plug it up again. No success. 4. Cut the brake rope. Successfully, the vehicle could be moved again, but with fault instructions on the display and acoustic warning signal I was able to drive the vehicle into the workshop. There was then a larger expensive repair carried out. Now my question: 1. If this fault with the electronic hand brake has become known more often or is it about a 2. When installing the brake ropes, novel deflectors were installed. Is that a measure to avoid such disturbances in the future. In other words, the problem has already been detected in previous cases on other vehicles and could thus be eliminated. 3. If reading the fault memory with IDS had not been able to detect the problem in order to repair it more cost-effectively. For me as the vehicle owner, the question arises: How can one use such a technique? fit into a vehicle without providing a cost-effective and practical note lock (redundancy). I would be very happy about an answer. Your broombinder X