# Service bulletin 122\-H7C3C\-04

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: 10173037
- Published by NHTSA: 2020\-04\-01
- Manufacturer's number: 122\-H7C3C\-04
- Manufacturer's date: 2020\-03\-13
- NHTSA component: STEERING

## NHTSA's summary

Updated instructions for replacing the trailing arm on the front and rear axle on affected Boxster and Cayman vehicles. There is a new supplier of parts and the entire axle must be checked to avoid cross use of parts.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173037-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10173037-9999.pdf)

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

## Components

Steering

## Vehicles listed

- 2016 PORSCHE 718 BOXSTER
- 2018 to 2019 PORSCHE 718 BOXSTER
- 2016 PORSCHE 718 CAYMAN
- 2017 to 2019 PORSCHE 718 CAYMAN
- 2013 to 2015 PORSCHE BOXSTER
- 2013 to 2015 PORSCHE CAYMAN
- 2017 PORSCHE redundant BOXSTER

## Other bulletins for the same vehicles and component

- [SPTL2609](/bulletins/11037868.md), 2026-10-02, Service bulletin: WHEELS; STEERING; SUSPENSION. Special Tools and Equipment Information for alignment machines \- Q3 2026 Software Spec Update Available
- [SPTL2608](/bulletins/11037083.md), 2026-09-04, Service bulletin: WHEELS; SUSPENSION; STEERING. Special Tools and Equipment Information for alignment machines \- Q2 2026 Software Spec Update Available
- [87/20 4812](/bulletins/11034602.md), 2026-07-07, Service bulletin: STEERING. Noise Symptom \- Creaking Noise can be Heard When Touching the Steering Wheel Cover: Reworking Front Steering Wheel Cover \(SY 87/20\)
- [No. D733](/bulletins/11022917.md), 2025-09-08, Service bulletin: STEERING. Parts information for parts withdrawal involving \(PAD423051B\) the Steering Gear with Track Rods. The vehicles affected are cars that use the part mentioned.
- [No. 1403.1](/bulletins/11011184.md), 2024-12-04, Service bulletin: STEERING. Instructions on advanced technical information for a squeak and or rattle from the dash or instrument cluster area on the Boxsters, Caymans, and 911s.
- [122\-B6E7G\-10](/bulletins/10122092.md), 2017-11-08, Service bulletin: WHEELS; STEERING. The features of the particularly sporty GT sports steering wheels in leather \(I\-no. 858\) or Alcantara \(XLL\) include: ? Steering wheel diameter: 360 mm ? In conjunction with PDK: Gearshift paddles for changing gear manually ? Including multi\-function operation and steering wheel heating \(489\)
- [122\-M6Z7N\-06](/bulletins/10117449.md), 2017-09-14, Service bulletin: EQUIPMENT:ELECTRICAL; VEHICLE SPEED CONTROL:CRUISE CONTROL; STEERING. Concerns: Control unit for steering\-column switch \(also referred to as combined steering\-column module\)/steering wheel electronics Information: Only for vehicles manufactured in production plant Osnabrück \(VIN designation "K"\): Malfunctions can occur during coding when enabling one of the following functions \* Cruise control, \* On\-board computer, \* Multi\-function steering wheel or \* Heated steering wheel Malfunctions can occur during coding in the steering\-column switch \(steering wheel electronics\) control unit.
- [TI\-40\-13](/bulletins/10055681.md), 2014-07-03, Service bulletin: STEERING:ELECTRIC POWER ASSIST SYSTEM. PORSCHE: ON SOME VEHICLES, THE STEERING WHEEL ELECTRONICS OR CONTROL UNIT FOR STEERING COLUMN SWITCH WOULD HAVE A MALFUNCTION, DURING CODING, IN HEATED STEERING WHEEL, ON BOARD COMPUTER, CRUISE CONTROL OR MULTI\-FUNCTION STEERING WHEEL. MODEL 2013 BOXSTER, BOXSTER S, CAYMAN, CAYMAN S. \*PE

JSON: [/v1/bulletins/10173037](/v1/bulletins/10173037)

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