Can changing timing belt on scenic cause air con problems?

Yes, changing the timing belt on a Renault Scénic can potentially cause air conditioning (AC) problems if the AC compressor is driven by the timing belt or if components near the timing belt installation are inadvertently disturbed. If the timing belt is not aligned properly or if any related pulleys are misaligned during the replacement, it can lead to issues with the drive belt that powers the AC system. Additionally, if the AC system was not properly recharged or reconnected after the timing belt replacement, it could also result in malfunction. Always ensure that a qualified technician performs the service to avoid such issues.