I have faced the same problem. I replaced the key battery with the same type and even tried other batteries, yet the car’s engine works while the doors do not open, despite all the known key re-synchronization procedures, which failed. I went to a car electrician, but he couldn’t find a solution. When he consulted his contacts in the field, he was told that this issue is common in KAROQ models, and resolving it requires the intervention of a special engineer working for the company to reprogram the key. How can a company commit such a serious and absurd negligence?! How is it acceptable that a car owner should be forced to send their vehicle from Algeria to the nearest dealer in another continent (Europe) just to replace a key battery? This is completely unacceptable and reflects a blatant disregard for customer convenience and rights! If there is any available solution, please let me know. Thank you