Recalls & Technical Service Bulletins
Every known recall and TSB affecting the Mercedes SLK across the R170 (1996–2004), R171 (2004–2011) and R172 (2011–2015) generations, with affected VIN ranges and remedies. Check your own vehicle below.
The Mercedes SLK has been subject to multiple safety recalls and technical service bulletins across all three generations of its production run.
Use the table below to check your generation, then confirm your VIN against the official Mercedes-Benz recall portal or your nearest dealer.
The table below lists known recalls and TSBs for all three SLK generations. Recall data is compiled from manufacturer notifications and must be confirmed against your specific VIN before acting on it. All recall repairs are carried out free of charge at any Mercedes-Benz authorised repairer.
| Generation | Ref. No. | Date | Affected VIN Range | Issue | Remedy |
|---|---|---|---|---|---|
| R170 (1996–2004) | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | Varianto roof hydraulic pump may develop a leak, potentially causing roof operation failure or fluid contact with electrical components | Inspection and replacement of hydraulic pump seal or full pump unit if required |
| R171 (2004–2011) | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | Front passenger airbag inflator may rupture during deployment due to propellant degradation, projecting metal fragments | Replacement of front passenger airbag inflator module |
| R171 (2004–2011) | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | Software fault in the engine control unit may cause the electric power steering to momentarily lose assistance at low speed | ECU software update to revised calibration |
| R172 (2011–2015) | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | Fuel line quick-connect fitting may not have been assembled to specification, creating a potential fuel leak under pressure | Inspection and replacement of fuel line connector; pressure test after repair |
| R170 / R171 / R172 | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | [PLACEHOLDER — confirm vs cost sheet] | Seat belt pretensioner may not deploy correctly in certain impact scenarios due to a manufacturing tolerance in the trigger mechanism | Inspection and replacement of affected seat belt pretensioner units |
All entries marked [PLACEHOLDER] require confirmation against the official Mercedes-Benz recall database before this page publishes. Recall numbers and VIN ranges are subject to change as new campaigns are issued.
Technical Service Bulletins differ from formal safety recalls. A TSB acknowledges a known issue and provides workshop instructions, but the fix is typically carried out during routine servicing rather than via a proactive owner notification. Our SLK service schedule reference notes where TSB-related inspections coincide with scheduled maintenance intervals.
Your Vehicle Identification Number is the only reliable way to confirm whether your specific car falls within an affected production batch. Here is how to find and use it.
The SLK's VIN appears in three locations: stamped on the vehicle identification plate at the base of the windscreen (visible from outside the driver's side), printed on the driver's door B-pillar sticker, and recorded in your V5C registration document. The VIN is always 17 characters — a mix of letters and numbers, never including I, O or Q to avoid confusion with numerals.
Mercedes-Benz operates a recall lookup portal where you enter your full 17-character VIN and receive an immediate confirmation of any outstanding campaigns. Alternatively, any authorised Mercedes-Benz dealer can run the same check on their internal system in under two minutes. If you are buying a used SLK — particularly an R170 or early R171 now over 20 years old — requesting a recall status check should form part of your pre-purchase inspection. Our VIN Decoder tool can identify your SLK's build specification and engine code before you cross-reference against the recall list.
If your VIN falls within an affected range, Mercedes-Benz UK will typically send a letter to the registered keeper. The repair is free regardless of how many owners the car has had or whether it was originally purchased through a Mercedes dealer. You book directly with any authorised repairer; the work usually takes between 30 minutes and three hours depending on the campaign.
Recalls address safety-critical defects present at the time of manufacture. They do not cover wear-and-tear items, servicing neglect, or problems introduced by previous owners. Understanding this boundary prevents false expectations and helps you budget correctly for ownership.
Brake pads, discs, wiper blades, tyres, drive belts and service fluids are never subject to recall even when they fail prematurely. If your SLK's braking components are corroded due to age rather than a manufacturing defect, the repair cost falls to you. Our repair-to-value framework explains when a repair remains financially sensible for the typical SLK's market value, applying the 70% threshold used across this site.
Some problems are well-documented among specialists and forums but have not triggered a formal recall campaign. These include the M271 timing chain tensioner wear that affects many R171 SLK200 and SLK280 models, and the M272 balance shaft chain concern on R171 SLK350 examples. These issues are addressed through TSBs or goodwill repairs at dealer discretion, but they are not guaranteed free fixes. If your SLK develops one of these symptoms, our M271 timing chain failure guide and M272 balance shaft chain page explain what to expect and what it typically costs.
If a previous owner has fitted non-standard components — particularly in the braking, steering or airbag systems — a recall repair may be refused until the vehicle is returned to standard specification. This is uncommon on SLKs but worth checking on any car with a modified history, especially examples that have had aftermarket supercharger or exhaust upgrades.
Beyond formal recalls, the SLK shares several well-documented failure patterns with other Mercedes models using the same engine families. These are not safety recalls but are common enough that any prospective buyer or current owner should be aware of them.
The R171 generation (2004–2011) predominantly uses the M271 supercharged four-cylinder in its SLK200 Kompressor and SLK280 variants — an engine with a documented timing chain tensioner weakness covered in detail on our M271 timing chain failure page. The SLK350 uses the M272 V6, which carries its own balance shaft chain concern addressed on our M272 balance shaft chain guide.
The R172 generation (2011–2015) uses the M271 in its SLK200 and SLK250 variants, and the M276 V6 in the SLK350. The M276 is a substantially more modern unit, but early examples have shown camshaft adjuster wear that our M276 camshaft adjuster page covers. The SLK55 AMG uses the M152 naturally aspirated V8, a robust unit with fewer documented failure patterns than its predecessors. For a full breakdown of engine-specific failure patterns, our engine code guide helps you identify exactly which unit is in your SLK before you investigate further.
If your SLK is showing symptoms that concern you — a warning light, unusual noise, or loss of power — our Diagnostic Wizard can help narrow the cause before you commit to a workshop visit.
Enter your 17-character VIN into the official Mercedes-Benz recall portal, or ask any authorised Mercedes dealer to run the check. It takes under two minutes and costs nothing. You will need your V5C logbook or the VIN plate at the base of your windscreen to hand.
Yes. Recall repairs are free regardless of the vehicle's age, mileage, or how many owners it has had. The obligation sits with the manufacturer, not the original purchaser. Simply book with any Mercedes-Benz authorised repairer and quote the recall reference.
A recall is a safety-critical defect that the manufacturer is legally required to fix free of charge and must proactively notify owners about. A TSB acknowledges a known issue and provides a fix procedure, but it is typically applied during routine servicing rather than via a dedicated owner notification. TSB repairs may or may not be free depending on warranty status and dealer goodwill.
Not necessarily. While the SLK shares some components with the SL roadster and was rebranded as the SLC from 2016, each model has its own distinct recall history tied to its specific platform and production run. The R170, R171 and R172 each have unique campaigns. Always confirm with your specific VIN rather than assuming a recall applies across model lines.
If your SLK has developed a fault not covered by a recall — a timing chain concern, supercharger issue, or engine warning — compare quotes from vetted UK Mercedes specialists. Enter your registration to get started.
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