Check Starter Harness – 2018-2020 Mercedes-Benz AMG GLC-Class

December 11, 2020 NHTSA CAMPAIGN NUMBER: 20V776000

Starter Power Supply Cable Installed Incorrectly

If the power supply cable short-circuits, it can result in a stall, increasing the risk of a crash. In addition, a short-circuit can increase the risk of a fire.

 

NHTSA Campaign Number: 20V776

Manufacturer Mercedes-BenzeBay logo USA, LLC

Components ELECTRICAL SYSTEM

Potential Number of Units Affected 2,563

 

Summary

Mercedes-BenzeBay logo USA, LLC (MBUSA) is recalling certain 2018-2020 AMG GLC 63 4MATIC vehicles. The power supply cable on the starter might not have been installed correctly, possibly allowing the cable to chafe against the starter housing and short-circuit.

 

Remedy

MBUSA will notify owners, and dealers will inspect the starter harness and power supply cable installation, and correct it as necessary, free of charge. The recall began March 18, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA’s number for this recall is 2021010006.

 

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

 


TO: Mercedes-BenzeBay logo Dealer Principals, General Managers, Sales Managers, Service Managers, Parts ManagersFROM:  Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services
RE: Recall Campaign Initial Notification
Check Starter Harness
MY18-20 253 (AMG GLC-Class)
Date: December 18, 2020

 

IMPORTANT RECALL CAMPAIGN UPDATE

 

Please see the attached documents related to the campaign listed above.

 

 

Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FOR-MERCEDES.

 

Sincerely,

Gregory Gunther

Department Manager, Vehicle Compliance & Analysis


Campaign No. :NHTSA IDCampaign Desc. :Check Starter Harness
TBA 20V776 20P2197320
This is to notify you of a new Recall Campaign regarding the starter harness on 2,563 Model Year MY2018-2020 253 (AMG GLC-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 “PENDING” on December 18, 2020.
Background
IssueMercedes-BenzeBay logo AG (“MBAG”), the manufacturer of Mercedes-BenzeBay logo vehicles, has determined that on certain Model Year (“MY”) 2018-2020 AMG GLC-Class (253 platform) vehicles, the power supply cable on the starter might not have been installed according to production specification and in certain conditions could contact the starter housing. In the event of an incorrect screw connection, the power supply cable to the starter might contact the starter housing. Over time this could lead to chafing of the wire insulation on the power supply cable due to relative movements, which could result in a short circuit. Depending on the nature of the short circuit, different vehicle functions may be affected and could result in the vehicle stalling.  Further, this could increase the risk of a crash or fire due to a short circuit.
What Weโ€™re DoingAn authorized Mercedes-BenzeBay logo dealer will check the affected vehicles and install the starter harness according to specification, if necessary.
PartsParts are not required for repair. However, the current remedy is not available at this time. An additional notification will be sent once the remedy is available.
Vehicles Affected
Vehicle Model Year(s)2018-2020
Vehicle ModelAMG GLC-Class
Vehicle Populations
Total Recall Population2,563
Total Vehicles in Dealer Inventory23
Given this notice, it is a violation of Federal law for a dealer to sell or lease any new MY18-20 GLC-Class vehicles in dealer inventory covered by this notification until the vehicle has been repaired.  Once the remedy is available, the vehicles will be flagged as โ€œOPENโ€ and Work Instructions will be available in Star TekInfo Once the repair is complete, the vehicle may be sold or leased.

 

Loaner and demonstrator vehicles may continue to be driven, but must not be retailed until repaired.   As a matter of normal service process, please check for other repair measures which might be applicable to the vehicle(s)

 

Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent new MY18-20 GLC-Class vehicles covered by this notification until the vehicle has been repaired.

 

Next Steps/Notes
Customer Notification TimelineCustomer letters will be mailed approximately one week after the remedy becomes available.
AOMS/SOMSAOMs โ€“ This recall may generate questions from your dealers. Please forward this notice to your dealers ASAP.
Rental Fleet PartnersThis recall may affect vehicles in your fleet. Please contact your respective MBUSA fleet representative for further information and next steps. For repairs, please contact your preferred MBUSA dealer.
While we regret any inconvenience this may cause, MBUSA is determined to maintain a high level of vehicle quality and customer satisfaction. Please refer all customer inquiries to the Customer Assistance Center at 1-800-FOR-MERCEDES.

 


TO: Mercedes-BenzeBay logo Dealer Principals, General Managers, Sales Managers, Service Managers, Parts ManagersFROM:  Gregory Gunther, Department Manager, Vehicle Compliance and Analysis, Engineering Services
RE: Recall Campaign Launch Notification
Check Starter Harness
MY18-20 253 (AMG GLC-Class)
Date: March 5, 2021

 

IMPORTANT RECALL CAMPAIGN UPDATE

 

Please see the attached documents related to the campaign listed above.

 

 

Please note that all customer inquiries should be directed to the Customer Assistance Center at 1-800-FOR-MERCEDES.

 

Sincerely,

Gregory Gunther

Department Manager, Vehicle Compliance & Analysis

 


Campaign No. :NHTSA IDCampaign Desc. :Check Starter Harness
202101000620V77620P5491301
This is to notify you of a Recall Campaign launch to check the starter harness on 2,563 MY 2018-2020 GLC-Class (253 platform) 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 March 5, 2021.

Background

IssueMercedes-BenzeBay logo AG (โ€œMBAGโ€), the manufacturer of Mercedes-BenzeBay logo vehicles, has determined that on certain Model Year (โ€œMYโ€) 2018-2020 GLC-Class vehicles (253 platform), the power supply cable on the starter might not have been installed according to production specification and in certain conditions could contact the starter housing. In the event of an incorrect screw connection, the power supply cable to the starter might contact the starter housing. Over time this could lead to chafing of the wire insulation on the power supply cable due to relative movements, which could result in a short circuit. Depending on the nature of the short circuit, different vehicle functions may be affected, and stalling of the vehicle, which could increase the risk of a crash, or a risk of fire cannot be ruled out.
What Weโ€™re DoingMBUSA will conduct a voluntary recall. An authorized Mercedes-BenzeBay logo dealer will check the affected vehicles and install the starter harness according to specification, if necessary.
PartsParts are available and can be ordered as necessary. The replacement rate is approximately 5%.

Vehicles Affected

Vehicle Model Year(s)2018-2020
Vehicle ModelAMG GLC-Class (GLC 63)

Vehicle Populations

Total Recall Population2,563
Total Vehicles in Dealer Inventory18
Given this notice, it is a violation of Federal law for a dealer to sell or lease any new MY18-20 AMG GLC-Class vehicles in dealer inventory covered by this notification until the vehicle has been repaired.  Once the remedy is available, the vehicles will be flagged as โ€œOPENโ€ and Work Instructions will be available in Star TekInfo. Once the repair is complete, the vehicle may be sold or leased.  Loaner and demonstrator vehicles may continue to be driven, but must not be retailed until repaired. As a matter of normal service process, please check for other repair measures which might be applicable to the vehicle(s)

 

Additionally, given this notice, it is a violation of Federal Law for car rental companies to rent new MY18-20 AMG GLC-Class vehicles covered by this notification until the vehicle has been repaired.

 

Next Steps/Notes

Customer Notification TimelineCustomer letters will be mailed approximately one week after the remedy becomes available.
AOMS/SOMSAOMs โ€“ This recall may generate questions from your dealers. Please forward this notice to your dealers ASAP.
Rental Fleet PartnersThis recall may affect vehicles in your fleet. Please contact your respective MBUSA fleet representative for further information and next steps. For repairs, please contact your preferred MBUSA dealer.
While we regret any inconvenience this may cause, MBUSA is determined to maintain a high level of vehicle quality and customer satisfaction. Please refer all customer inquiries to the Customer Assistance Center at 1-800-FOR-MERCEDES.

 


Campaign No. 2021010006, March 2021

 

TO:ALL MERCEDES-BENZeBay logo CENTERS
SUBJECT:Model GLC-Class (253 platform)
Model Year 2018-2020
Check Starter Harness

 

Mercedes-BenzeBay logo AG (โ€œMBAGโ€), the manufacturer of Mercedes-BenzeBay logo vehicles, has determined that on certain Model Year (โ€œMYโ€) 2018-2020 GLC-Class vehicles (253 platform), the power supply cable on the starter might not have been installed according to production specification and in certain conditions could contact the starter housing. In the event of an incorrect screw connection, the power supply cable to the starter might contact the starter housing. Over time this could lead to chafing of the wire insulation on the power supply cable due to relative movements, which could result in a short circuit. Depending on the nature of the short circuit, different vehicle functions may be affected, and stalling of the vehicle, which could increase the risk of a crash, or a risk of fire cannot be ruled out. An authorized Mercedes-BenzeBay logo dealer will check the affected vehicles and install the starter harness according to specification, if necessary.

 

Prior to performing this Recall Campaign:

  • VMI must always be checked before performing campaigns to verify that the campaign is required on a specific Always check for any other open campaigns, and perform accordingly.
  • Please review the entire Recall Campaign bulletin and follow the repair procedure exactly as described.

 

Please note that Recall Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.

 

Approximately 2,563 vehicles are involved.

 

Order No. P-RC-2021010006

 


Check/test procedure A

 

  1. Remove lower engine compartment lining (AR61.20-P-1105LW).

 

  1. Check circuit 30 starter wiring harness (A, Figure 1) at starter.

The circuit 30 starter wiring harness must not be in contact with the solenoid switch (B) of the starter as in Figure 1.

 

circuit 30 starter wiring harness

Figure 1

 

    1. Circuit 30 starter wiring harness is in contact with starter: Carry out check/test procedure B.
    2. Circuit 30 starter wiring harness is not in contact with starter: End measure.

 

The findings from the check/test procedure must be recorded on the work order.

 

 

Check/test procedure B

 

  1. Disconnect ground line of battery (AR54.10-P-0003LW).

 

  1. Unscrew circuit 30 starter wiring harness at starter and check for damage in area of insulation.

The insulation must not be damaged (any sign of chafing is considered damage). To improve accessibility, remove the quick-release fastener of the steering shaft if necessary.

 

    1. Insulation of circuit 30 starter wiring harness damaged: Carry out work procedure.
    2. Insulation of circuit 30 starter wiring harness not damaged: End measure.

 

  • If the insulation is not damaged, the circuit 30 starter wiring harness must be reinstalled correctly and in such a way that it does not make contact with any surface that may result in chafing, taking the anti-twist lock at the solenoid switch into account.

 

  • The findings from the check/test procedure must be recorded on the work order.

 

Work procedure

 

  1. Remove heat shield (C, Figure 2) above busbar.

 

heat shield

Figure 2

 

  1. Remove cover (D, Figure 3) of bus bar and release starter wiring harness at circuits 30 and 50 (1, Figure 3).

 

Installation:

Circuit 30 17

Circuit 50  6

 

starter wiring harness at circuits 30 and 50

Figure 3

 

  1. Remove heat shield (E, Figure 4).

For basic data, see40-P-6026MNG. Do not drain coolant.

 

heat shield

Figure 4

 

 

  1. Remove heat shields (F, Figure 5 and G, Figure 6).

 

heat shields

Figure 5 & Figure 6

 

  1. Release clamp (H, Figure 7) at starter wiring harness from holder. Release clamp from below and slide in direction of arrow.

 

Release clamp

Figure 7

 

  1. Release circuit 50 (I, Figure 8) at starter.

 

Release circuit 50

Figure 8

 

  1. Release lower clamp of starter wiring harness from holder. Same procedure as described in operation step 5.

 

  1. Remove starter wiring harness and replace.

 

  1. Assemble in reverse order.

 

Primary Parts Information

Qty.Part NamePart Number
As requiredEl. wiring harness from connecting point to starterA 253 540 19 28

 

Small parts such as screws, lock nuts, sealing rings, cable ties, fluids, sealant, etc. are not listed in the parts list. The required small parts are taken into account in the budgeting.

 

Warranty Information 

Check/test procedure A

Operation: Check fastening of starter wiring harness to starter (02-1887)

Includes: Remove/install lower engine compartment lining

Damage Code Operation Number Labor Time (hrs.)
54 913 01 702-18870.5

 

Check/test procedure A and B

Operation: Check fastening of starter wiring harness to starter (02-1887)

Includes: Remove/install lower engine compartment lining

Check starter wiring harness (for damage)(02-1888)

Includes: Disconnect ground line of battery and unfasten/fasten circuit 30 starter wiring harness from/to solenoid switch

Damage Code Operation Number Labor Time (hrs.)
54 913 01 702-18870.5
02-18880.6

 

Check/test procedure A and B with Replace starter wiring harness

Operation: Check fastening of starter wiring harness to starter (02-1887)

Includes: Remove/install lower engine compartment lining

Check starter wiring harness (for damage)(02-1888)

Includes: Disconnect ground line of battery and unfasten/fasten circuit 30 starter wiring harness from/to solenoid switch

Replace starter wiring harness (after check)(02-1889)

Damage Code Operation Number Labor Time (hrs.)
54 913 01 702-18870.5
02-18880.6
02-18891.8

 

Note

Operation Number labor times are subject to change.

 

P-RC-2021010006

 



3 Affected Products

Vehicle

MAKEMODELYEAR
MERCEDES-BENZeBay logoGLC63 AMG2018-2020

 


13 Associated Documents

Recall Quarterly Report #2, 2021-2

RCLQRT-20V776-4267.PDF 211.248KB

 


Recall Acknowledgement

RCAK-20V776-2438.pdf 244.829KB

 


Recall 573 Report – Amendment 1

RCLRPT-20V776-7903.PDF 214.819KB

 


Defect Notice 573 Report

RCLRPT-20V776-8936.PDF 214.821KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-20V776-7190.pdf 205.23KB

 


Recall 573 Report – Amendment 2

RCLRPT-20V776-8011.PDF 214.798KB

 


Issued Interim Owner Notification Letter(Part 577)

RIONL-20V776-1995.pdf 151.81KB

 


Manufacturer Notices(to Dealers,etc)- Recall Campaign Launch Notification Check Starter Harness MY18-20 253 (AMG GLC-Class)

RCMN-20V776-0060.pdf 563.667KB

 


Recall Quarterly Report #1, 2021-1

RCLQRT-20V776-7275.PDF 211.145KB

 


Recall 573 Report – Amendment 4

RCLRPT-20V776-3581.PDF 214.833KB

 


Remedy Instructions and TSB

RCRIT-20V776-3596.pdf 399.298KB

 


Recall 573 Report – Amendment 3

RCLRPT-20V776-8749.PDF 214.798KB

 


Manufacturer Notices(to Dealers,etc)- Recall Campaign Initial Notification Check Starter Harness MY18-20 253 (AMG GLC-Class)

RCMN-20V776-5419.pdf 130.141KB

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=20V776&docType=RCL

 


 

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Last update on 2026-05-25 / Affiliate links / Images from Amazon Product Advertising API


 

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