2016-2026 Audi Models Shock Absorber Leaks Assessment
This Audi Technical Service Bulletin (TSB 2018194/12) provides guidance for technicians to accurately assess shock absorber leaks on 2016-2026 Audi models, differentiating between true leaks and harmless oil residue.
Marcus Weber2022 Audi e-tron
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Symptoms and Customer Complaints
Owners of 2016-2026 Audi models may report various issues related to the chassis, wheel suspension, and level control system. Common complaints include an "oily deposit" on one or more shock absorbers, general "leaks" or "oil leaking" from the vehicle rear, and concerns about the "appearance, surface" of suspension components. Some owners might also notice "noises, vibrations" originating from the level control system or vehicle rear.
TSB Revision History
This Technical Service Bulletin, Transaction No. 2018194/12, has undergone several revisions to update information and model year applicability:
- Revision 12 (Current): Revised header data, adding the latest model year.
- Revision 11 (January 15, 2025): Revised header data, adding model years and updating service information.
- Revision 10 (March 15, 2022): Revised header data, adding model years.
Diagnosing Audi Shock Absorber Leaks
This TSB serves as an assessment aid to help technicians accurately determine if an Audi shock absorber is truly leaking. The key is to differentiate between a functional leak and normal oil residue or marks.
- True Leaks: A genuinely "leaking shock absorber is characterized by a wet film of oil running down the tube." This indicates a breach in the seal, allowing fluid to escape.
- Normal Oil Marks: Conversely, "a light film of dried oil or oil marks on the tube beneath the dust guard is not a clear indicator of a leaking shock." These marks are typically residue from the manufacturing or installation process, or slight "sweating" near the seal that provides lubrication and reduces wear. Such oil marks do not negatively affect the technical properties of the shock absorber.
Technicians should refer to the "Checking Shock absorbers" section in the Elsa Repair Manual for additional diagnostic information.
Important Warnings for Owners and Technicians
Owners and technicians should be aware of specific guidelines regarding Audi shock absorber leaks:
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Frequently Asked Questions
- What does an oily deposit on my Audi's shock absorber mean?
- An oily deposit on your Audi's shock absorber could be either a true leak or harmless oil residue. This Technical Service Bulletin (TSB 2018194/12) helps distinguish between a wet film of oil running down the tube (a leak) and a light film of dried oil or oil marks (normal residue).
- How can I tell if my Audi's shock absorber is truly leaking?
- A truly leaking shock absorber is characterized by a "wet film of oil running down the tube." If you only see a "light film of dried oil or oil marks on the tube beneath the dust guard," it's likely residue or lubrication and "Replacing the part is not necessary."
- Is TSB 2018194/12 covered under warranty?
- According to the bulletin, TSB 2018194/12 is informational only and is "not applicable to any Audi Warranty." This means any assessment or repair related to this bulletin would typically not be covered under standard Audi warranty terms.
- What should I do if I notice oil on my Audi's shock absorbers?
- If you notice an oily deposit, it's best to have your vehicle inspected by an authorized Audi service facility. They can use the guidelines in TSB 2018194/12 to properly assess whether your Audi shock absorber leaks are a concern or just normal residue.
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