{"nhtsa_id":11020832,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-23","date":"2025-07-16","document_id":"09-018-25","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Engine Cylinder Block Porosity Inspection - Engine Cold Start Rough Idle Customers may experience the following: ● Rough engine idle when cold starting the engine. ● Low coolant level in coolant recovery bottle.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020832-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020832-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020832","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"JEEP","model":"COMPASS","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_jeep_compass","2022_jeep_compass","2023_jeep_compass","2024_jeep_compass"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee","2022_jeep_grand-cherokee","2023_jeep_grand-cherokee","2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2021,"year_to":2024,"match":"base","vehicle_ids":["2021_jeep_grand-cherokee","2022_jeep_grand-cherokee","2023_jeep_grand-cherokee","2024_jeep_grand-cherokee"]},{"make":"JEEP","model":"GRAND CHEROKEE L","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee-l","2022_jeep_grand-cherokee-l","2023_jeep_grand-cherokee-l","2024_jeep_grand-cherokee-l"]},{"make":"JEEP","model":"WRANGLER","year_from":2021,"year_to":2024,"match":"exact","vehicle_ids":["2021_jeep_wrangler","2022_jeep_wrangler","2023_jeep_wrangler","2024_jeep_wrangler"]},{"make":"JEEP","model":"WRANGLER 4XE","year_from":2021,"year_to":2024,"match":"base","vehicle_ids":["2021_jeep_wrangler","2022_jeep_wrangler","2023_jeep_wrangler","2024_jeep_wrangler"]}],"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":[]}