# Service bulletin 20518021

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: 10145086
- Published by NHTSA: 2018\-10\-01
- Manufacturer's number: 20518021
- Manufacturer's date: 2018\-08\-07
- NHTSA component: STEERING

## NHTSA's summary

Steering malfunction message displayed on dash, DTC 'C10AC07\-Steering mechanical malfunction' stored

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145086-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145086-0001.pdf)

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

## Components

Steering

## Trouble codes named

C10AC

## Vehicles listed

- 2017 to 2018 BENTLEY BENTAYGA

## Other bulletins for the same vehicles and component

- [2082806/1](/bulletins/11037157.md), 2026-09-09, Service bulletin: STEERING. Steering Rack Requires Replacement \| Bentayga \| 17\-18MY
- [2056407/7](/bulletins/11025089.md), 2025-11-06, Service bulletin: STEERING; SUSPENSION. Running gear \- Noise identification. Condition Customer statement: Noise complaint from the suspension and/or steering Workshop findings: The noise can be reproduced and clearly assigned to the suspension system from either of the axles And/or The noise can be reproduced and clearly assigned to the steering system
- [2065197/4](/bulletins/11015383.md), 2025-03-08, Service bulletin: STEERING; SUSPENSION. Squeaking/creaking noises from the front axle and/or leaks at the lower ball joint/s.
- [2056407/6](/bulletins/11015368.md), 2025-03-08, Service bulletin: STRUCTURE:BODY; SUSPENSION; STEERING. Running gear \- Noise identification. Customer statement: Noise complaint from the suspension and/or steering.
- [2055540/5](/bulletins/11015363.md), 2025-03-07, Service bulletin: STEERING; STRUCTURE:BODY; POWER TRAIN. Rumble noise and/or floor pan/steering column vibration.
- [2056407.5](/bulletins/10244649.md), 2023-11-06, Service bulletin: POWER TRAIN; STEERING. Running gear \- Noise identification Workshop Findings: \-The noise can be reproduced and clearly assigned to the suspension system from either of the axles And/or The noise can be reproduced and clearly assigned to the steering system Prior to starting the instructions within this TPI, the Retailer must check and confirm the vehicle is in standard factory condition and has not had any non\-approved aftermarket modifications conducted including the modification of the engine control modules \(chip tuning\) Check the history of the vehicle to confirm Should any aftermarket modifications be found, the Retailer must make Product Support aware by raising a DISS query to report the details of the modification, you must then await feedback from Product Support before conducting any further work
- [2055540.4](/bulletins/10244644.md), 2023-11-06, Service bulletin: STEERING; SUSPENSION; STRUCTURE; ELECTRICAL SYSTEM. Rumble noise and/or floor pan/steering column vibration Customer Statement: \-Floor pan or steering column/steering wheel vibration when manoeuvring/steering at slow speeds with steering wheel input
- [2062095.3](/bulletins/10238904.md), 2023-07-08, Service bulletin: STEERING. DTC's B14BF01 and /or B14A854 evident in address 0009 \- Steering column will not adjust Customer Statement: \-Steering column will not adjust in any direction
- [2048616.11](/bulletins/10232257.md), 2023-03-06, Service bulletin: STEERING; SERVICE BRAKES, HYDRAULIC; SUSPENSION. Creaking Noise From the Front Suspension When Maneuvering Technical Background: \-The noise present in the sound file is caused by defective lower suspension lever \- rear\- hydraulic mounts. In order to reproduce the noise this bush must be twisted, therefore the noise can appear in the following circumstances: \-When performing parking maneuvers with the brake applied \-When steering from lock to lock with the vehicle in motion and the brake applied \-When the vehicle is moved with steering input over uneven surfaces \(ex. a ramp or speed bump\)
- [2055841.3](/bulletins/10230827.md), 2023-02-03, Service bulletin: ELECTRICAL SYSTEM; STEERING. DTC B145504 \- Temperature sensor steering wheel heater faulty \- \(passive sporadic\) logged Customer Statement: \-Earl deactivation of the steering wheel heating function

JSON: [/v1/bulletins/10145086](/v1/bulletins/10145086)

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