Replace Oil Dipstick – 2012-2017 Mercedes-Benz

April 27, 2018 NHTSA CAMPAIGN NUMBER: 18V272000

Oil in Active Curve System may Leak

The leaking oil in the presence of an ignition source can increase the risk of a fire.

 

NHTSA Campaign Number: 18V272

Manufacturer Mercedes-Benz USA, LLC.

Components SUSPENSION

Potential Number of Units Affected 9,725

 

Summary

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2012-2014 ML350 Bluetec 4Matic and ML550 4Matic, 2012-2015 ML63 AMG 4Matic and ML350 4Matic, 2013-2016 GL350 Bluetec 4Matic, GL550 4Matic and GL63 AMG 4Matic, 2017 GLS350d 4Matic, GLS450 4Matic, GLS550 4Matic and GLS63 AMG 4Matic, 2015 ML400 4Matic, 2016 GLE400 4Matic, GLE350 4Matic, GLE63 AMG 4Matic, GLE63S AMG 4Matic, GLE450 4Matic Coupe and GLE63S AMG 4Matic Coupe, 2015-2016 GL450 4Matic and 2013-2014 GL450 4Matic vehicles equipped with the Active Curve System (ACS). In certain driving conditions, if the oil level in the ACS reservoir is below the minimum level, the oil may foam and leak out of the vent holes in the reservoir cap.

 

Remedy

MBUSA will notify owners, and dealers will correct the oil level as necessary and replace the reservoir sealing cap to prevent oil foam from leaking out, free of charge. The recall began August 30, 2018. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA’s number for this recall is 2018070015.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

Check if your Mercedes-Benz has a Recall

 


2017 Mercedes-Benz GLS-Class
2017 Mercedes-Benz GLS-Class

 


This is to notify you of a new Recall Campaign to replace the oil dipstick on 9,725 MY12-17 166 & 292 platform (ML-Class, GLE-Class, GLECoupe Class, GL-Class and GLS-Class) vehicles.  The recall campaign will be visible on the www.safercar.gov website and may generate questions from customers. Affected VINs will be flagged in VMI as “OPEN” on August 17, 2018.

 

Issue

Daimler AG (“DAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain ML, GLE, GLE Coupe, GL, and GLS-Class vehicles (166, 292 platform) with the Active Curve System (“ACS”), the oil in the ACS’s oil reservoir could leak out of the oil reservoir through the vent holes in the sealing cap of the oil dipstick. In such case, the oil could leak onto hot engine components which could increase, the risk of a fire.

 

What We’re Doing

MBUSA will conduct a voluntary recall.   An authorized Mercedes-Benz dealership will replace the oil dipstick of the active curve system oil reservoir on the affected vehicles.

 

Parts

Parts are available and can be ordered as necessary.

 

Customer Notification Timeline

Customer letters will be mailed approximately one week after the remedy becomes available.

 


Work procedure 

  1. Replace oil dipstick (A, Figure 1) of ACS (ACTIVE CURVE SYSTEM) reservoir. A new and optimized oil dipstick with filter is installed in the plug (B, Figure 1).

 

Primary Parts Information

Qty.Part NamePart NumberEstimated Replacement Rate
1ACS (ACTIVE CURVE SYSTEM) oil dipstickA 166 320 00 00100%

 


Chronology :

In July 2017, DAG received one individual field report about a vehicle manufactured in 2015 with local thermal damage in the engine compartment and immediately launched investigations.

In September 2017 first results of the analysis indicated a leakage of oil from the oil reservoir of the Active Curve System through the vent holes in the sealing cap of the oil reservoir. Further analyses were started.

In November 2017, DAG was able to cause oil in the oil pump to foam up under extremely dynamic driving conditions.

Additional analyses were initiated to identify further contributing factors.

In January 2018 it was found that due to a deviation in the production process, the oil level in the ACS might not meet internal specification potentially increasing the likelihood of oil foaming.

To assess all possible consequences of the issue, fire tests were conducted in February 2018.

In March 2018, the range of potentially affected vehicles was identified.

In April 2018, after completing all aforementioned testing for potential fire, DAG determined that a potential safety risk could not be ruled out.

 


37 Affected Products

Vehicles

MAKEMODELYEAR
MERCEDES BENZGL3502013-2016
MERCEDES BENZGL4502013-2016
MERCEDES BENZGL5502013-2016
MERCEDES BENZGL632013-2016
MERCEDES BENZGLE3502016
MERCEDES BENZGLS350D2017
MERCEDES BENZML3502012-2015
MERCEDES BENZML4002015
MERCEDES BENZML5502012-2014
MERCEDES BENZML632012-2015
MERCEDES-BENZAMG GLE632016
MERCEDES-BENZAMG GLS632017
MERCEDES-BENZGLE4002016
MERCEDES-BENZGLE4502016
MERCEDES-BENZGLE63S2016
MERCEDES-BENZGLS4502017
MERCEDES-BENZGLS5502017

 


17 Associated Documents

Recall 573 Report – AMENDMENT 2

RCLRPT-18V272-2528.PDF 224.445KB

 


Recall 573 Report – AMENDMENT 4

RCLRPT-18V272-9908.PDF 224.396KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-18V272-0945.pdf 233.656KB

 


Manufacturer Notices(to Dealers,etc)- RE: Recall Campaign Launch Notification 2018070015 Replace Oil Dipstick MY12-17 166 292 (GLE-Class, GLE-Coupe Class, GLS-Class)

RCMN-18V272-0455.pdf 451.509KB

 


ISSUED Interim Owner Notification Letter(Part 577)

RIONL-18V272-0943.pdf 152.531KB

 


Recall Acknowledgement

RCAK-18V272-6229.pdf 282.285KB

 


Defect Notice 573 Report

RCLRPT-18V272-9509.pdf 224.415KB

 


Recall 573 Report – AMENDMENT 1

RCLRPT-18V272-1897.PDF 224.386KB

 


Recall 573 Report – AMENDMENT 5

RCLRPT-18V272-5993.PDF 221.709KB

 


Manufacturer Notices(to Dealers,etc)- May 10, 2018 – RE: Recall Campaign Initial Notification – Oil Reservoir Leak in Active Curve System – MY12-17 166 292 (ML-Class, GLE-Class, GLE-Coupe Class, GL-Class, GLS-Class)

RCMN-18V272-4797.pdf 183KB

 


Recall 573 Report – Amendment 3

RCLRPT-18V272-4381.PDF 224.451KB

 


Recall Quarterly Report #3, 2019-1

RCLQRT-18V272-6807.PDF 211.332KB

 


Recall Quarterly Report #2, 2018-4

RCLQRT-18V272-7490.PDF 211.249KB

 


Recall Quarterly Report #1, 2018-3

RCLQRT-18V272-3701.PDF 211.143KB

 


Recall Quarterly Report #5, 2019-3

RCLQRT-18V272-4088.PDF 211.553KB

 


Recall Quarterly Report #4, 2019-2

RCLQRT-18V272-1542.PDF 211.441KB

 


Recall Quarterly Report #6, 2019-4

RCLQRT-18V272-7405.PDF 211.644KB

 


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