The DS 9 is a plush executive saloon that flies the flag for French luxury, with an emphasis on comfort and refined materials. Its advanced electronics monitor servicing closely and need resetting after maintenance. Once the oil has been changed you’ll clear the oil service reset, the service reminder counter is restarted, and tyre or sensor work calls for a TPMS reset. Many owners also reset the brake pad wear warning after a pad change. Because these procedures vary by production version, the page is organised by generation. Choose the DS 9 generation matching your car from the options below to view the correct guide.