{"nhtsa_id":10193011,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-11","date":"2021-05-11","document_id":"TSB-042121","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"The VMUX input pin may fail due to a flyback voltage spike from an unsuppressed solenoid coil installed on a hydraulic manifold for the aerial. The solenoid coil will need to be swapped out for a suppressed version to prevent this from happening.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193011-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193011-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10193011","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ROSENBAUER","model":"AERIAL","year_from":2019,"year_to":2021,"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":[]}