Recall Campaign 2023070021 - Update Engine Control Unit Software (P-RC-2023070021)

RECALL CAMPAIGN 2023070021 - UPDATE ENGINE CONTROL UNIT SOFTWARE

SERVICE CAMPAIGN BULLETIN

SERVICE INFORMATION

IMPORTANT EMISSIONS RECALL CAMPAIGN INFORMATION 

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

Senior Manager, Vehicle Compliance & Analysis

SUBJECT

Model G-Class (463 platform) 

Model Year 2019-2020 

Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that the software for the engine control unit in the subject vehicles may not meet current specifications. Any catalytic converter aging might not be immediately detected and therefore, the check engine Malfunction Indicator Lamp ("MIL") may not illuminate as required. After a cold start in the "catalytic converter heating" operating mode, misfires might occur and the check engine MIL would be illuminated. Consequently, these issues may not meet regulatory requirements for onboard diagnostics and/or exhaust gas emissions.

Prior to performing this Campaign:

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

Approximately 6,964 vehicles are affected.

Order No. P-RC-2023070021

• Ensure use of XENTRY Diagnosis version 06/2023 or higher.
• Follow the operation steps exactly as described in XENTRY Diagnosis.
• Use a charger to ensure sufficient power supply to the vehicle's on-board electrical battery system  (greater than 12.5 V).
• If XENTRY Diagnosis is already connected to the vehicle, start with Work Procedure step   2 . 

  If two or more software updates or SCN codings are performed during a single workshop visit, operation items 02-4762 and 02-5058  may be invoiced only on one of the workshop orders. 

WORK PROCEDURE

1. Connect XENTRY Diagnosis.
2. Update engine electronics (ME-SFI) control unit software.

   To do so, select menu item "Quick test view-N3/10 engine electronics - Adaptations-Control unit update-Updating of control unit software".

   Then follow the user guidance in XENTRY Diagnosis.

3. Disconnect XENTRY Diagnosis.
   NOTE: The following allowable labor operation should be used when submitting a warranty claim for this repair.

WARRANTY INFORMATION

Damage Code	Operation Number	Description	Labor Time (hrs.)
54 994 30	02-9334	Update N3/10 engine electronics control unit software (with XENTRY Diagnosis connected)	0.1
	02-4762 (1)	Connect/disconnect diagnostic system (XENTRY Diagnosis)	0.1
	02-5058 (1)	Connect/disconnect starter battery charger (with XENTRY Diagnosis connected)	0.1
(1) Invoice operation item only once for each workshop order.

The following step applies to California dealers only. 

Apply Proof of Correction Label (A 000 584 54 13)  to area identified in Figure 1  . Fill in the blank areas of the label. The campaign number for the California Proof of Correction is unique and must be entered as such (230721),  your dealer code, and the date of the repair, using a black permanent marker.

The following step applies to California dealers only. 

Provide the owner with the completed and signed Proof of Correction Certificate (A 000 584 42 14) (Figure 2),  after you scan a completed form and attach to the RO. The recall number for the California Proof of Correction is unique and must be entered as such (230721). 

CALIFORNIA PROOF OF CORRECTION PARTS INFORMATION

Qty.	Part Name	Part Number
1	Sheet (CA Dealers Only)	A 000 584 42 14
1	Label (CA Dealers Only)	A 000 584 54 13

WARRANTY INFORMATION

Damage Code	Operation Number	Description	Labor Time (hrs.)
212CA 00	02-0001	Apply Proof of Correction Label and completed Proof of Correction Certificate	0.1