This Owner’s Manual for the 2021 Elantra (CN7) is your essential guide to fully understanding every feature, function, and specification of your vehicle. Inside, you will find detailed descriptions of exterior and interior design, dashboard and instrument-panel layouts, seating and safety features (seat belts, airbags, child restraint systems), and all comfort and convenience functions — from door locks, windows, mirrors, lighting, climate control, to infotainment and storage.
Moreover, the manual covers important operational instructions for driving — from starting the engine and transmission use to braking, steering, and wheel / tire maintenance — as well as guidance for emergency situations (flat tire, battery issues, towing, breakdowns) and scheduled maintenance (fluids, filters, bulbs, tires, etc.). It ensures that both drivers and owners can safely, efficiently, and confidently use their Elantra day-to-day, while preserving long-term reliability and safety.

TroubleshootingProblem Symptoms TableBefore replacing or repairing air conditioning components, first determine if the malfunction is due to the refrigerant charge, air flow or compressor.Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem.
Repair procedures Inspection1.Connect the battery voltage and check the blower motor rotation.Replacement1.Disconnect the negative (-) battery terminal.2.Disconnect the blower motor connector (A) and then remove the blower motor (B) after loosening the screws.