# 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.

- Type: Service bulletin
- NHTSA id: 10130120
- Published by NHTSA: 2018\-03\-13
- Manufacturer's number: 122\-L7P4X\-03
- Manufacturer's date: 2018\-02\-20
- NHTSA component: POWER 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130120-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10130120-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Transfer case

## Vehicles listed

- 2015 to 2018 PORSCHE MACAN

## Other bulletins for the same vehicles and component

- [122\-K5X7U\-05](/bulletins/10138301.md), 2018-05-21, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). Subject: Transfer case and transfer case control unit \(all\-wheel drive control unit\)
- [122\-E8R2D\-05](/bulletins/10117441.md), 2017-09-14, Service bulletin: EQUIPMENT:ELECTRICAL; POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\). 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.

JSON: [/v1/bulletins/10130120](/v1/bulletins/10130120)

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