NHTSA ID Number: 10240168
Manufacturer Communication Number: LI46.35-N-076604
TSB/Document Date: 2023-08-02
Summary
Various concerns in relation to electric power steering including Rattling/humming noise from electric power steering when steering fully turned (see video recordings 01 and 02).
Electric Power Steering Diagnosis
Topic number
LI46.35-N-076604
Version
1
Function group
46.35 - Electrical steering
Date
7/11/23
Validity
Model 447
Model 907 except code ZG1 (Engageable all-wheel drive)
and except code ZG3 (Engageable all-wheel drive with
transmission ratio)
Reason for change
Complaint
Various concerns in relation to electric power steering including Rattling/humming noise from electric power steering
when steering fully turned (see video recordings 01 and 02).
Attachments
File
Description
01.mp4
Noise on underbody from electric power steering when
steering fully turned.
02.mp4
Noise in vehicle from electric power steering when steering fully turned.
Cause
1.
2.
3.
•
Check vehicle history for repairs in relation to front of vehicle or wheel damages
Inspect wheels, suspension and steering gear for damages as shown in example pictures below.
If no physical damages are found during inspection, pull the boots back to inspection for signs of corrosion/water
or damages.
If the presence of water is found inside the boots or rack, in combination with no physical outer damage, this is a
sign of the vehicle being used in high water situations and will not be warrantable.
NOTE:
•
•
•
Please review AH46.20-P-9409-01A for vehicles that have been in an accident
Please review AP46.00-D-4650TS Check condition of steering mechanism
Please review attached Steering Gear Diagnosis presentation from 2021 NDTD
Ball screw drive (KGT) of electric power steering damaged by:
•
1.
External force due to:
Hitting a curb or post with the front wheels.
11.07.2023 05:49:20
© Copyright Mercedes-Benz
AG
Page 1 / 5
2.
Driving over obstacles (e.g. pothole/ threshold/ speed bump/ gully) at an inappropriate speed.
•
1.
Corrosion / water ingress due to damaged boot:
Cracks (see picture 03).
2.
High pressure cleaner (see picture 04).
3.
Animal bite (see picture 05).
4.
Defective retaining clamp (see picture 06).
Attachments
File
Description
03.jpg
Corrosion / water ingress due to damaged boot (cracks).
11.07.2023 05:49:20
© Copyright Mercedes-Benz AG
Page 2 / 5
04.jpg
Corrosion / water ingress due to damaged boot (high
pressure cleaner).
05.jpg
Corrosion / water ingress due to damaged boot (animal
bite).
06.jpg
Corrosion / water ingress due to damaged boot (defective
retaining clamp).
Steering Gear Diagnosis NDTD2021.pdf
Steering Gear Diagnosis- NDTD2021
WIS-References
Document number
Title
Note
AH46.20-P-9409-01A
Evaluating steering gear when repairing accident vehicles
all models
AP46.00-D-4650TS
Check condition of steering mechanism
all models
Remedy
***********************************************************************************************************************
11.07.2023 05:49:20
© Copyright Mercedes-Benz AG
Page 3 / 5
Note: The replacement of component parts (I.E. replacement of electric power steering) or the invoicing of material
costs or wage costs through warranty or goodwill in combination with any improper use of the vehicle or any external
damage is not permitted.
***********************************************************************************************************************
1.
Replace electric power steering.
Information: See AR46.20-S-0500E for model 447 with engine 274
See AR46.20-D-0500TS for model 907 except code ZG1 (Engageable all-wheel drive) and except code ZG3 (Engageable all-wheel drive with transmission ratio)
WIS-References
Document number
Title
Note
AR46.20-D-0500TS
Remove/install steering gear
Model 907 except code ZG1 (Engageable all-wheel drive) and except code
ZG3 (Engageable all-wheel drive with
transmission ratio)
AR46.20-S-0500E
Remove/install steering gear
Model 447 with engine 651, 654.9 except code ZG2 (Permanent all-wheel
drive) Model 447, 448 with engine 274
Symptoms
Chassis/suspension > Noises > Humming/droning/throbbing
Chassis/suspension > Noises > Vibrates
Chassis/suspension > Noises > Grunting
Chassis/suspension > Steering system > Noises > Chattering/knocking
Chassis/suspension > Steering system > Noises > Humming/vibrations
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
-
Additional necessary replace- 1
ment part scopes, small parts,
workshop equipment or consumable materials must be replaced according to the information in the repair documents
referred to in this document.
These are to be determined
according to the vehicle identification number (VIN) through
the XENTRY Portal Parts Information system.
X
-
Additional necessary replace- ment part scopes, small parts,
workshop equipment or con-
X
11.07.2023 05:49:20
© Copyright Mercedes-Benz AG
Page 4 / 5
sumable materials must be replaced according to the information in the repair documents
referred to in this document.
These are to be determined
according to the vehicle identification number (VIN) through
the XENTRY Portal Parts Information system.
Operation numbers/damage codes
Op. no.
Operation text
Time
Damage
code
Note
4648638
Rack-and-pinion steering sealing
boot – loose Note: Only for the case that the customer complaint does
not involve any improper use of the
vehicle or external damage. The listed damage code is not to be considered as an acceptance of costs.
The general guidelines in the Warranty Manual apply.
463013
Replace electric power steering
---
Information: Model 907
463406
Replace electric power steering
---
Information: Model 447
11.07.2023 05:49:20
© Copyright Mercedes-Benz AG
Page 5 / 5
- 💯【Conta.ct us for Support Directly】If you met any...
- 🔥🔥🔥【2026 AUTEL FLAGSHIP MK900BT MK900-BT, NEW...
- 🚗【3000+ ACTIVE TESTS (50➡3000+), SAME AS MS...
- 🚗【40+ HOT SERVICES FOR 150 MAKES (28+➡40+)】Full...
- 🚗【OE ALL SYSTEM DIAGNOSE, AUTO SCAN 2.0: SCAN LICENSE...
- 📌【We are Here for You】Dear valued customer, please be...
- 🚀【5X Faster Next-Level Hardware, Same as MK900/ MX...
- 🔥【3000+ Active Tests = MK900/MK900BT but...
- 📢【2026 U.S. Version, All-in-One as MK808S/ MK808Z...
- 🔥【28+ Hot Services for 150+ Brands】Same as MaxiCOM...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: LI46.35-N-076604
Replacement Service Bulletin Number:
MFR Communication Date: 2023-07-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: STEERING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 【✅Compared to BOSSCOMM IF742, IF745 Offers Full-System Diagnostics】The BOSSCOMM IF745 car diagnostic scanner is an upgraded model of IF742. In addition to supporting all OBD2 Code Reader functions and 6 reset options (ABS/EPB/SAS/BMS/Oil/Throttle), it expands diagnostics from 4 systems (Check Engine/ABS/SRS/Transmission) to vehicle All systems, including Steering, Suspension, and Body Electronics. This provides deeper, more comprehensive diagnostic capabilities.
- 【✨10 OBD2 Functions】The BOSSCOMM IF745 scan tool’s DTC Lookup instantly translates fault codes into user-friendly explanations, its I/M Readiness feature streamlines emissions testing with a single tap, and Freeze Frame lets you pinpoint the exact moment of a fault for in-depth root-cause diagnosis. Combined with a live data dashboard and advanced diagnostics (O2S, OBMon, EVAP), it delivers comprehensive insights for confident troubleshooting.
- 【✨Deep Diagnostics for All Vehicle System Modules】Beyond code reading/clearing and ECU information retrieval, our all-in-one data stream feature lets you inspect all current fault codes and their locations across the vehicle’s systems. This vehicle code reader helps you turn off dashboard warning lights and perform a comprehensive self-check of your car at home—no more back-and-forth trips to the repair shop or hefty inspection fees.
- 【✨6 Essential Resets: ABS Bleeding, Oil, EPB, SAS, Throttle, BMS】The BOSSCOMM IF745 obd2 scanner diagnostic tool swiftly purges air from brake lines to restore braking sensitivity, fine-tunes maintenance cycles to eliminate false alerts, resolves parking brake issues with one-click control, recalibrates steering sensors for stability, optimizes engine idling/acceleration for smoother performance, and deeply resets battery systems to extend lifespan and range via precise parameter adjustments.❗NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨10,000+ Car Models, AutoVIN, 13 Languages】The BOSSCOMM IF745 vehicle scanner diagnostic tool covers 73+ global car brands and offers support in 13 languages, making it perfect for DIYers, auto mechanics, or as a thoughtful gift. With a single-click AutoVIN feature, it instantly retrieves vehicle serial numbers, streamlining diagnostics for users globally. This adaptable tool balances user-friendliness with precision, catering to both personal and professional requirements.✅Unsure about compatibility? Compatibility will vary on vehicles' model and year, pls reach us via 📧 [email protected] 📧 before purchase.
This product presentation was made with AAWP plugin.