{"nhtsa_id":11029225,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-03","date":"2026-02-26","document_id":"01-005-26","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":"Cooling System","summary":"Some vehicles may exhibit green residue (yellow circle) on the outer surface of the coolant reserve tank, which appears to be coolant blowback. This is caused by coolant seeping out and appearing as leakage from small pores (slight gaps) formed due to the deterioration of the coolant reserve tank (sub) material. To eliminate this concern, the material of the coolant reserve tank (sub) will be modified.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029225-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029225-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029225","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"CX-70","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_mazda_cx-70","2026_mazda_cx-70"]},{"make":"MAZDA","model":"CX-70 PLUG-IN HYBRID","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_mazda_cx-70","2026_mazda_cx-70"]},{"make":"MAZDA","model":"CX-90","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_mazda_cx-90","2025_mazda_cx-90","2026_mazda_cx-90"]},{"make":"MAZDA","model":"CX-90 PLUG-IN HYBRID","year_from":2024,"year_to":2026,"match":"base","vehicle_ids":["2024_mazda_cx-90","2025_mazda_cx-90","2026_mazda_cx-90"]}],"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":[]}