For automotive parts and free diagnostic services near Grossmont Center in La Mesa, O'Reilly Auto Parts store #2686 on Jackson Drive carries batteries, brake pads, motor oil, filters, lighting, and body-repair components for cars, trucks, SUVs, motorcycles, and trailers. The O'Reilly VeriScan OBD-II reader provides free check-engine-light code scans with printed fault reports, a diagnostic entry point that feeds into the cosmetic and maintenance services at nearby providers like So-Cal Details for exterior preservation alongside mechanical repair. Free in-store services also include battery load testing, alternator and starter bench testing, wiper-blade installation, and headlight-bulb fitment with purchase. The Loaner Tool Program stocks over 80 specialty items — spring compressors, harmonic-balancer pullers, brake-caliper piston tools — available on refundable deposit for DIY repairs, a self-service resource that parallels the windshield and auto-glass installation work at San Diego County Glass & Windows in the Grossmont area. Used-oil and used-battery recycling programs accept materials regardless of purchase origin, processing automotive waste under California Title 22 hazardous-materials diversion standards.