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Service bulletin 122-L7P4X-03

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 id10130120
Published by NHTSA2018-03-13
Manufacturer's number122-L7P4X-03
Manufacturer's date2018-02-20
NHTSA componentPOWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); POWER TRAIN

NHTSA's summary

The "transfer case" is designed as an active all-wheel drive system that is dynamically adapted to the respective driving state. Power transmission between the front and rear axle is controlled electronically via the "all-wheel drive servomotor (transfer case)" and themulti-plate clutches integrated in the transfer case. ? On all-wheel drive vehicles, the drive train can become strained at low speeds and when the steering is turned sharply when "Off-roadmode" is activated, depending on design. ? Under extreme conditions, the drive train can also become strained when "Off-roadmode" is deactivated. ? Customers with little experience with all-wheel drive vehicles can interpret this behavior as a fault, which in turn can result in incorrect diagnoses in the workshop. Remedial action: Customer complaint to be checked: ? Rough-running engine or ? thevehicle vibrates or ? theengine jerks under load/during acceleration.

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

Transmission and driveline, Transfer case

Vehicles listed
PORSCHE MACAN2015, 2016, 2017, 2018

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

Other bulletins for the same vehicles and component
122-K5X7U-052018-05-21. Service bulletin. Subject: Transfer case and transfer case control unit (all-wheel drive control unit)
122-E8R2D-052017-09-14. Service bulletin. Concerns: All-wheel drive control unit Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. Due to an error in the current software for the all-wheel drive control unit, there is a possibility that the all-wheel drive control unit will not be initialized at times after switching on the ignition and as a result, the vehicle's CAN system cannot establish communication with the all-wheel drive control unit.