Mercedes-Benz CLA-Class Service Bulletins (2027)

26 manufacturer communications on file.

• May 22, 2026•Document ID: 11033019

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  LI46.15-P-070510

  Date Added:

  May 30, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module NOTE: Occasionally to verify complaint, the steering column/vehicle needs to be in direct sunlight or hot conditions for a few hours. If noise only occurs when adjusting the steering column via electric actuation, please perform: 1. Disassemble bellows of steering column tube module. 2. Move steering column entirely out and entirely down. 3. Grease steering column on all pivot points including, but not limited to, green-marked positions with a suitable brush (find pictures in attachment). 4. Move column up 1/4 of the way and grease again. 5. Continue until upper limit stop is reached. 6. Then move steering column adjustment in all directions from limit stop to limit stop several times to work in the grease. 7. If noise does not resolve, wipe excess grease off and perform greasing and movement to limit stops in all directions again. For all other noises or if the above does not resolve, create a TIPS case Body, Chassis, and Entertainment inbox. Attach a detailed description of the noise complaint, images, and a recording of the noise. Include detailed items of the following: • Position of height and longitudinal adjustment when the noise occurs • If possible, locate affected component part on steering column • State any change in the noise when steering column component parts are touched (e.g. spring, etc.)

  Associated Products (64)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz C-Class2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLE2026 Mercedes-Benz E-Class2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLE-Class2026 Mercedes-Benz GLS-Class2026 Mercedes-Benz S-Class2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class+ 44 more
  Associated Documents

  • DownloadMC-11033019-0001.pdf↗
• May 19, 2026•Document ID: 11032875

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER

  Mfr Comm. #:

  LI82.30-P-059239

  Date Added:

  May 20, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled back onto the windshield from the A-pillar (Figure 1) D: After windshield cleaning, water keeps spraying onto the windshield for several wipe cycles (Figure 2) A1: The windshield and wiper blades are contaminated with residues from car washing facilities, identifiable by the water beading. The resulting differences in the friction values between the wiper blades and the windshield can excite the wiper blades to vibrate. Note: It is mostly wax residue from the washer system, but also water-repellent nano-particle coating for paint and/or silicone-based washer fluid, that could cause this problem. A partially dry windshield also has different friction values, which can likewise result in squeaking of the wiper blades A2: The wiper blades are worn by mechanical damage (wiper lip damaged by ice or insect debris, or deformed by long periods of disuse). A3: Incorrect angle of incidence of the wiper arms to the windshield. Because of this, the rubber lip of the wiper blade may not flip over at the reversal point. Cause B: B1: Wax/ dirt residues on the windshield B2: Wiper blades deformed or worn B3: Downforce of wiper arm not OK (Figure 3) Cause C: Water is pulled back onto the windshield by the differential pressure created as the wiper arm moves downwards. Cause D: Washer water collects in the fastening of the wiper blade and is blown onto the windshield by the airstream over several wipe cycles. Note and supporting information: Wiper blades are wear parts which, even when "not used" for long periods (kept in park position), may become permanently deformed and damaged. Further stresses on the rubber wiper blade arise due to various environmental influences which progressively change the effectiveness of the rubber wiper blade and accelerate the aging process. Due to the natural aging process and wear, the wiper blades should be replaced twice a year, preferably in Spring and Fall (see operator's manual). Remedy Remedy A: A1: Cleaning entire windshield with A 000 986 40 71. A2: Checking water's flow behavior after windshield has been cleaned (see Video 1). If, after cleaning, there are still areas with water beading, then the cleaning process must be carried out again until a rejection reaction is no longer present. • Note: On the vehicle in the video (Video 1), water still beads on the bottom left of the windshield. The windshield is still not properly clean, even though it appears to be clean. The windshield is only properly clean when there are no more areas on the windshield where water beads. A3: Replace wiper blades with genuine wiper blades. Important: Only exchange wiper blades if windshield no longer has water-repellent areas Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. Remedy B: B1: Clean windshield with intensive cleaner A 000 986 40 71. Important: Do not clean the wiper blades otherwise the graphite coating will be damaged. B2: Replace wiper blades with genuine wiper blades • Note: Replacement of wiper blades is not covered under warranty and can be replaced at the expense of the customer. B3: Check the wiper arm for excessive resistance in the bearing. Restore mobility or replace wiper arm if necessary. Remedy C: Problem inherent in design for which there is no technical remedy. Exception: X204 up to 02/2014. In these vehicles, it is possible to install the design configuration of vehicles as of 02/2014. This includes wiper arms (styled arms) with improved behavior in this respect. It is also necessary to replace the wiper blades because the styled arms feature a Top Lock connection (previously Side Lock).

  Associated Products (221)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz AMG GT2026 Mercedes-Benz C-Class2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLE2026 Mercedes-Benz E-Class2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLE-Class2026 Mercedes-Benz S-Class2026 Mercedes-Benz SL-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class+ 201 more
  Associated Documents

  • DownloadMC-11032875-0001.pdf↗
• May 18, 2026•Document ID: 11032872

  Service Bulletin/Repair Instructions
  STEERING; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI46.35-P-080591

  Date Added:

  May 20, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint • Uneven steering feel when steering left and right, especially when steering near the center position. or • Squeaking noise when steering quickly around the center position Cause Variation in the steering gear due to manufacturing tolerances. Remedy 1. Check the vehicle's MB.OS software release with Xentry and update if necessary. 2. Connect Xentry, switch on the ignition (vehicle not roadworthy and power steering off), and raise the vehicle so that the wheels are not loaded. 3. Navigate to control unit N80, Steering Column Switch Module, actual values tab, and locate "Steering Angle". 4. Turn the steering wheel to full lock left until the mechanical end stop of the steering is reached. Record the steering wheel angle. 5. Perform a full lock to the right until the mechanical end stop is reached. Record the steering wheel angle. 6. Depending on whether the positive or negative value is greater, reposition the steering wheel by one tooth in the relevant direction (refer to AR46.10-P-0100CLA). Positive value is greater => Shift steering wheel one tooth to the right (clockwise) Negative value is greater ⇒ Shift steering wheel one tooth to the left (counterclockwise) Example steering angle: 450° and -462° => Move the steering wheel one tooth to the left. 7. Perform a wheel alignment. Pay particular attention to adjusting the toe values accordingly. 8. Reset the straight-ahead learned value with XENTRY in the N68 electric power steering control unit. 9. Perform bus sleep (lock the vehicle, keep the key out of range, and leave it locked for at least 15 minutes). 10. Perform a test drive and re-assess. If, after the subsequent test drive, any of the previously mentioned problems persist, please create a TIPS case to the Body/Chassis/Entertainment team.

  Associated Products (2)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLA-Class
  Associated Documents

  • DownloadMC-11032872-0001.pdf↗
• May 12, 2026•Document ID: 11032699

  Service Bulletin/Repair Instructions
  BACK OVER PREVENTION: WARNINGS; LANE DEPARTURE: BLIND SPOT DETECTION; ELECTRICAL SYSTEM

  Mfr Comm. #:

  LI54.65-P-080132

  Date Added:

  May 14, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached diagnostic guide.

  Associated Products (117)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz AMG GT2026 Mercedes-Benz C-Class2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLE2026 Mercedes-Benz E-Class2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLE-Class2026 Mercedes-Benz GLS-Class2026 Mercedes-Benz S-Class2026 Mercedes-Benz SL-Class2025 Mercedes-Benz AMG GT2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz G-Class+ 97 more
  Associated Documents

  • DownloadMC-11032699-0001.pdf↗
• May 8, 2026•Document ID: 11032576

  Service Bulletin/Repair Instructions
  STEERING

  Mfr Comm. #:

  LI46.15-P-070510

  Date Added:

  May 11, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module If noise only occurs when adjusting the steering column via electric actuation please perform: 1. Disassemble bellows of steering column tube module. 2. Move steering column entirely out and entirely down. 3. Grease steering column on green-marked positions with a suitable brush (find pictures in attachment). 4. Move column up 1/4 of the way and grease again. 5. Continue until upper limit stop is reached. 6. Then move steering column adjustment in all directions from limit stop to limit stop several times to work in the grease. 7. If noise does not resolve, perform above procedure again and anywhere there are movement or friction points that the noise seems to be emanating from. 8. Then move steering column adjustment in all directions from limit stop to limit stop several times to work in the grease. 9. If noise still does not resolve, please open a TIPS case. For all other noises or if the above does not resolve, create a TIPS case Body, Chassis, and Entertainment inbox. Attach a detailed description of the noise complaint, images, and a recording of the noise. A detailed description includes: • Position of height and longitudinal adjustment when the noise occurs • If possible, locate affected component part on steering column • State any change in the noise when steering column component parts are touched (e.g. spring, etc.)

  Associated Products (64)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz C-Class2026 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLE2026 Mercedes-Benz E-Class2026 Mercedes-Benz GLA-Class2026 Mercedes-Benz GLB-Class2026 Mercedes-Benz GLC-Class2026 Mercedes-Benz GLE-Class2026 Mercedes-Benz GLS-Class2026 Mercedes-Benz S-Class2025 Mercedes-Benz C-Class2025 Mercedes-Benz CLA-Class2025 Mercedes-Benz CLE2025 Mercedes-Benz E-Class2025 Mercedes-Benz EQB-Class2025 Mercedes-Benz GLA-Class2025 Mercedes-Benz GLB-Class2025 Mercedes-Benz GLC-Class2025 Mercedes-Benz GLE-Class+ 44 more
  Associated Documents

  • DownloadMC-11032576-0001.pdf↗
• May 7, 2026•Document ID: 11032581

  Service Bulletin/Repair Instructions
  VISIBILITY/WIPER

  Mfr Comm. #:

  LI67.39-P-080552

  Date Added:

  May 11, 2026

  Manufacturer:

  MERCEDES-BENZ

  Summary

  Complaint Customer reports that a side window will not close using the automatic (one‑touch) function, or the window reverses direction while closing. • Condition may occur on one or more doors • Fault code B25A3F0 may be stored in the affected door control unit • Window normalization may be lost Cause System error in the power window motor Remedy 1.) Update SCN coding of the affected door control unit (N69/x) using Xentry. • Repair coding is available with Car Package Release (CPR) 1.3.0 or higher. 2.) If the complaint persists after SCN coding or for repeat complaints → replace the power window motor on the affected door following applicable WIS instructions.

  Associated Products (2)

  2027 Mercedes-Benz CLA-Class2026 Mercedes-Benz CLA-Class
  Associated Documents

  • DownloadMC-11032581-0001.pdf↗