{"nhtsa_id":10081452,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-04","date":"2015-08-25","document_id":"FSB 261-037","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM","mfr_system":null,"summary":"LOW COOLANT LIGHT. SOME MACK MODEL TRUCKS EQUIPPED WITH CUMMINS ENGINE MAY SHOW THE LOW COOLANT LIGHT ON THE DASH OR HAVE A MID-LEVEL COOLANT DIAGNOSTIC TROUBLE CODE (DTC) LOGGED IN THE ENGINE ECU. CERTAIN DRIVING CONDITIONS CAN TRIGGER THE SENSOR TO READ A MODERATELY SEVERE LEVEL EVEN WHEN COOLANT LEVEL IS IN THE NORMAL OPERATING RANGE. VEHICLES BUILT AFTER AUGUST, 2015 HAVE NEW SOFTWARE AND A NEW SENSOR THAT NO LONGER HAS THE MODERATELY SEVERE LEVEL POSITION SENSOR.","document":null,"url":"https://open.wenmarpro.com/bulletins/10081452","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}