Mercedes-Benz bulletin LI22.20-P-080897
What it saysComplaint Clacking and creaking noises from the engine compartment during load changes, especially when driving off after a cold start and at outside temperatures below 41°F. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Aug 25, 2026, received Aug 18, 2026, about the suspension — 2 documents under this number. It names 1 model year (2027). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
Get the next Mercedes-Benz CLA-Class bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationComplaint Clacking and creaking noises from the engine compartment during load changes, especially when driving off after a cold start and at outside temperatures below 41°F. Cause Engine mount A178 240 15 00. Remedy Remove lower engine mount A178 240 15 00 and replace it with lower engine mount A178 240 15 00 28. NOTE: The noise will resolve with the original engine mount A178 240 15 00 when the vehicle warms up. Please keep this in mind during complaint verification as it may not be reproducible if vehicle/mount is warm.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LI22.20-P-080897 | Service bulletin | Aug 25, 2026 | 11036512 | PDF, 33 KB |
| LI22.20-P-080897 | Service bulletin | Aug 12, 2026 | 11036228 | PDF, 38 KB |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A178 240 15 00 | — | — |
Read by machine from the document NHTSA serves (4 pages), read Sep 30, 2026. A part number is shown only where it matches Mercedes-Benz’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Mercedes-Benz bulletins for the CLA-Class
A weekly email, sent only in a week when Mercedes-Benz files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
More bulletins about the suspension
Source: same model, same component group1 other manufacturer communication filed against the Mercedes-Benz CLA-Class under the same component group (suspension), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI32.25-P-070053 | Service bulletin | May 16, 2026 | Complaint There may be creaking noises when steering while stationary or driving slowly. See Example Noise attachment Cause The vehicle leve… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mercedes-Benz, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Benz LI22.20-P-080897 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the LI22.20-P-080897 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Mercedes-Benz warranty extension on file lists the ones Mercedes-Benz has filed.
Which vehicles does LI22.20-P-080897 cover?
The manufacturer filed it against 1 model year: 2027 Mercedes-Benz CLA-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.