{"nhtsa_id":10000638,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-03-26","date":"2002-12-02","document_id":"070021D","mfr_campaign":null,"replaces":"070021C","component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"ENGINE TICKING (PISTON SLAP) NOISE COMPLAINTS WHEN ACCELERATING BETWEEN 1200 AND 3000 RPM. MODELS E500, SL500, CLK500 MY2003. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10000638","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES BENZ","model":"CLK CLASS","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_mercedes-benz_clk-class"]},{"make":"MERCEDES BENZ","model":"E CLASS","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_mercedes-benz_e-class"]},{"make":"MERCEDES BENZ","model":"SL CLASS","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_mercedes-benz_sl-class"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}