TSB-21-34-001
Service Bulletin Details
Public Details for: TSB-21-34-001
This technical service bulletin was sent to dealers informing them a shock absorber oil leak may result in replacement of absorbers unnecessarily when trace amounts of oil are noted to have adhered to the shock absorber.
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Models from 2022
2022 MITSUBISHI ECLIPSE CROSS |
2022 MITSUBISHI MIRAGE |
2022 MITSUBISHI MIRAGE G4 |
2022 MITSUBISHI OUTLANDER |
2022 MITSUBISHI OUTLANDER PHEV |
2022 MITSUBISHI OUTLANDER SPORT |
Models from 2021
2021 MITSUBISHI ECLIPSE CROSS |
2021 MITSUBISHI MIRAGE |
2021 MITSUBISHI MIRAGE G4 |
2021 MITSUBISHI OUTLANDER |
2021 MITSUBISHI OUTLANDER PHEV |
2021 MITSUBISHI OUTLANDER SPORT |
Models from 2020
2020 MITSUBISHI ECLIPSE CROSS |
2020 MITSUBISHI MIRAGE |
2020 MITSUBISHI MIRAGE G4 |
2020 MITSUBISHI OUTLANDER |
2020 MITSUBISHI OUTLANDER PHEV |
2020 MITSUBISHI OUTLANDER SPORT |
Models from 2019
2019 MITSUBISHI ECLIPSE CROSS |
2019 MITSUBISHI MIRAGE |
2019 MITSUBISHI MIRAGE G4 |
2019 MITSUBISHI OUTLANDER |
2019 MITSUBISHI OUTLANDER PHEV |
2019 MITSUBISHI OUTLANDER SPORT |
Models from 2018
2018 MITSUBISHI ECLIPSE CROSS |
2018 MITSUBISHI MIRAGE |
2018 MITSUBISHI MIRAGE G4 |
2018 MITSUBISHI OUTLANDER |
2018 MITSUBISHI OUTLANDER PHEV |
2018 MITSUBISHI OUTLANDER SPORT |
Models from 2017
2017 MITSUBISHI MIRAGE |
2017 MITSUBISHI MIRAGE G4 |
2017 MITSUBISHI OUTLANDER |
2017 MITSUBISHI OUTLANDER SPORT |
Models from 2010
2010 MITSUBISHI OUTLANDER |
Models from 2009
2009 MITSUBISHI OUTLANDER |
Models from 2008
2008 MITSUBISHI OUTLANDER |
Models from 2007
2007 MITSUBISHI OUTLANDER |
Models from 2006
2006 MITSUBISHI OUTLANDER |
Models from 2005
2005 MITSUBISHI OUTLANDER |
Models from 2004
2004 MITSUBISHI OUTLANDER |
Models from 2003
2003 MITSUBISHI OUTLANDER |
Models from 2002
2002 MITSUBISHI MIRAGE |
Models from 2001
2001 MITSUBISHI MIRAGE |
Models from 2000
2000 MITSUBISHI MIRAGE |
Models from 1999
1999 MITSUBISHI MIRAGE |
Models from 1998
1998 MITSUBISHI MIRAGE |
Models from 1997
1997 MITSUBISHI MIRAGE |
Page 1 of 4 SUBJECT: Shock Absorber Leak Diagnosis No: TSB-21-34-001 DATE: May 2021 MODEL: See Below CIRCULATE TO: [ ] GENERAL MANAGER [ X ] PARTS MANAGER [ X ] TECHNICIAN [ X ] SERVICE ADVISOR [ X ] SERVICE MANAGER [ ] WARRANTY PROCESSOR [ X ] SALES MANAGER PURPOSE A shock absorber oil leak may result in replacement of absorbers unnecessarily when trace amounts of oil are noted to have adhered to the shock absorber. Small amounts of oil found on the shock absorber does not necessarily confirm that a leak is present and instead may be a normal phenomenon. In an effort to prevent unnecessary replacements and possible warranty claim denials, please follow the guidelines below when performing diagnostics. AFFECTED VEHICLES • All Eclipse Cross • All Outlander, Outlander PHEV, and Outlander Sport • All Mirage and Mirage G4 DIAGNOSTIC INFORMATION/PROCEDURE Phenomenon & Cause: Sealing Structure of Shock Absorber The sealing of the Shock Absorber has three functions: 1. To seal the Shock Absorber Oil inside of the Cylinder. 2. To prevent dust from entering into the inside of the structure. 3. To lubricate the Piston Rod by forming an oil film. Copyright 2021, Mitsubishi Motors North America, Inc. Continued The information contained in this bulletin is subject to change. For the latest version of this document, go to the Mitsubishi Dealer Link, MEDIC, or the Mitsubishi Service Information website (www.mitsubishitechinfo.com). (5088) Page 2 of 4 TSB-21-34-001 As shown in the illustration above, the function of the seal is to lubricate the Piston Rod by its sliding motion. The repetitive sliding of the Piston Rod may result in oil being scraped off of the Piston Rod or condensed oil vapor may adhere to the surface of the Shock Absorber casing. This small amount of oil seen on the surface of the Piston Rod may be recognized as an oil leak caused by defective sealing. However, this phenomenon is not a defect of the Shock Absorber. Please use caution though as a faulty seal could cause an oil leak that shows a similar appearance. Guidelines for Making Visual Inspection Judgments The following diagnostic flowchart along with this guideline, should help when a visual inspection judgment regarding oil leaks is made. During inspection of the Shock Absorber, follow the flowchart below and if any visible oil adhesion is noted, determine the level of severity, and act accordingly. Level 1: Level 2/3: Normal oil adhesion / No defect Oil leak due to defect Note: Refer to the following page for levels of leak severity Page 3 of 4 TSB-21-34-001 Categorization Guidelines for Oil Leak Severity Shock absorber with spring sheet Shock absorber without spring sheet Remarks Trace of oil is less than 1/3 of case length. Trace of oil Trace of oil Level 1 This level of oil trace pattern does not suggest progressive oil leak. Band like oil drippage. (Irrelevant to length) Level 2 Trace of oil of this configuration suggests a leak in a short span. Trace of oil Level 3 Note: Refer to the following page for levels of leak severity by model. Trace of oil is more than 1/3 of case length. Trace of oil of this level indicated leak is progressing. Page 4 of 4 TSB-21-34-001 Leak Measurement Table by Model Measure the leak length and refer to the table below when concluding the visual diagnosis. WARRANTY This bulletin is supplied as technical information only and is not an authorization to repair. It is strongly suggested that a thorough inspection be performed prior to warranty claim submissions.