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Service bulletin LI83.70-P-078292

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11033926
Published by NHTSA2026-06-17
Manufacturer's numberLI83.70-P-078292
Manufacturer's date2026-06-16
NHTSA componentVISIBILITY/WIPER

NHTSA's summary

Complaint Red warning message in instrument cluster: "Towing not allowed, see Operator's Manual, consult workshop without starting the engine again". Cause Missing diaphragm on high voltage PTC (interior heating) N33/14 component part results in moisture buildup in the installation space for the heater and causes an insulation fault. The entry of moisture into the high voltage PTC (interior heating) N33/14 in the high voltage wiring harness to the DC/DC converter N83/1 causes a slow-acting insulation fault. This may occur sporadically only to start with before actively developing over time. Remedy Exchange high voltage PTC (interior heating) N33/14 with new part with diaphragm (production date as from 22T231, see component part label). If necessary, and after further testing/measurement, replace wiring harness for DC/DC converter N83/1 to high voltage PTC (interior heating) N33/14. Note: According to the Replacement Parts Department only high voltage PTCs (interior heating) with a diaphragm and with production date as from 22T231 are available! This Li only applies to vehicles with PN A 000 835 83 03 installed. If the vehicle has another part number installed, this does not apply.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Glass, wipers and mirrors, Wipers and washers

Vehicles listed
MERCEDES-BENZ AMG EQE2023 to 2025
MERCEDES-BENZ AMG EQE 4MATIC+2023 to 2026
MERCEDES-BENZ AMG EQE SUV 4MATIC2024 to 2025
MERCEDES-BENZ AMG EQE SUV 4MATIC+2026
MERCEDES-BENZ AMG EQS2022 to 2024
MERCEDES-BENZ EQE 320 4MATIC2026
MERCEDES-BENZ EQE 320+2026
MERCEDES-BENZ EQE 350 4MATIC2023 to 2025
MERCEDES-BENZ EQE 350+2023 to 2026
MERCEDES-BENZ EQE 5002023 to 2025
MERCEDES-BENZ EQE 500 4MATIC2023 to 2025
MERCEDES-BENZ EQE SUV 320 4MATIC2026
MERCEDES-BENZ EQE SUV 320+2026
MERCEDES-BENZ EQE SUV 350 4MATIC2023 to 2025
MERCEDES-BENZ EQE SUV 350+2023 to 2025
MERCEDES-BENZ EQE SUV 500 4MATIC2023 to 2025
MERCEDES-BENZ EQS 4502022
MERCEDES-BENZ EQS 450 4MATIC2023 to 2026
MERCEDES-BENZ EQS 450+2022 to 2026
MERCEDES-BENZ EQS 580 4MATIC2022 to 2026
MERCEDES-BENZ EQS SUV 400 4MATIC2026
MERCEDES-BENZ EQS SUV 450 4MATIC2023 to 2025
MERCEDES-BENZ EQS SUV 450+2023 to 2025
MERCEDES-BENZ EQS SUV 550 4MATIC2026
MERCEDES-BENZ EQS SUV 580 4MATIC2023 to 2025
MERCEDES-MAYBACH EQS SUV 680 4MATIC2024 to 2026

Listing a model year does not mean every vehicle of it is concerned: the document says which.