{"nhtsa_id":11021105,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-31","date":"2025-07-29","document_id":"LI20.30-P-078666","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Complaint Coolant level warning in instrument cluster. Coolant odor or leaking from coolant expansion reservoir. Cause Coolant wicking through electrical contacts, or level sensor electrical connections not present in expansion reservoir. Remedy 1. Inspect expansion tank level sensor electrical connection for wicking coolant or missing contacts. Additionally the triangular sticker may not be present on top of reservoir. See example of OK and NOK part. 2. Replace expansion reservoir if level sensor contacts are confirmed to be missing or wicking coolant. 3. Repair any damage to wiring or electrical contacts on wiring harness. 4. Create a TIPS case with supporting photos and submit to the IFQ inbox for information. Vehicle can be released after repair is complete.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021105-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11021105-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11021105","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"GLE 350 4MATIC","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450 4MATIC","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450E 4MATIC","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLS 450 4MATIC","year_from":2025,"year_to":2025,"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":[]}