{"nhtsa_id":10122686,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-08","date":"2012-12-21","document_id":"A341212 2032227-","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"The gearbox warning light is on. P174B (valve 4 in the sub-gearbox 1, electric complaint) or P174F (valve 4 in the sub-gearbox 2, electric complaint) is logged in the gearbox control unit. The entry occurs mainly up to an ATF temperature of 30°C. Check this in the extended environmental conditions of the diagnosis protocol. The entry only occurs once and cannot be reproduced. After a reset there are no more complaints.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10122686-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10122686-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10122686","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P174B","P174F"],"topics":[],"vehicles":[{"make":"AUDI","model":"S4","year_from":2012,"year_to":2013,"match":"exact","vehicle_ids":["2012_audi_s4","2013_audi_s4"]},{"make":"AUDI","model":"S5 CABRIOLET","year_from":2012,"year_to":2013,"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":[]}