Service bulletins for the 2013 Audi S8
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.
809 on file from NHTSA, as of 2026-10-19.
About P2181 on the 2013 Audi S8: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P2181 are shown. Show all
| 148820380451 | 2022-08-01. Service bulletin. ENGINE AND ENGINE COOLING. DTC P218100 will be stored if, after a specified air flow (warm-up phase), the measured engine temperature does not reach the value in the timing map. Particles in the cooling system from the production process affect the closing of the coolant thermostat. |
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| A011522 2038045- | 2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Supersedes Technical Service Bulletin Group 01 number 14-88 dated August 15, 2014. The MIL is on. DTC P218100 (Cooling System Performance) is stored in the engine control module (ECM), J623 (address word 01). DTC P218100 will be stored if, after a specified air flow (warm-up phase), the measured engine temperature does not reach the value in the timing map. Particles in the cooling system from the production process affect the closing of the coolant thermostat. Replacing the coolant temperature sender does not fix the problem. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.