2025 Mercedes-Benz AMG SL55 4MATIC+

Complaint Customer states the check engine light is on in the instrument cluster. The customer may also complain of rough running. The following DTC is stored in the ME control unit (N3/10): P152C00 ‑ A leak was detected in the intake air system (cylinder bank 2) Cause Previous engine control unit software Remedy Update the ME control unit software (see below for the remedy variants), clear the DTC, and perform the following test drive: • Driving the car a short distance (<10 miles) in Comfort mode with ECO stop/start disabled • Shut the engine off and let the bus go to sleep • Drive the car again a short distance (<10 miles) in Comfort mode with ECO stop/start disabled Remedy software variants (the car will NOT have both): For vehicles with SA code 802/803 without code 053: A 177 903 95 07 For vehicles with both SA codes 803 and 053: A 177 903 96 07

Issue A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.

A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to be checked for other possible contributors. 1. Prior collision damage. 2. Excessive vehicle sitting times without rotating components. 3. Wheel bearing/hub lateral runout. 4. Wheel mating interface has been overtightened (did not follow WIS torque procedures). 5. Mating interfaces have been excessively modified (painted, gouged, bent, etc...). Remedy Read through the entire attached worksheet prior to performing. After performing, please review the final page and perform work accordingly. NOTE: This document is not pre‑authorization or otherwise dealing with warranty. This is intended for diagnostic purposes only. If there are any questions on how to proceed OR The work sheet has been performed and the vehicle has returned with the same concern. Please perform the measurements as seen in the worksheet again and open a TIPS case to the Body, Chassis, and Entertainment team.

Complaint Issue after OTA Update IC Odometer Reading blank("_ _ _ _") IC Maintanence data unavailable Cause OTA Update E61.0 Remedy In the IC Control Unit Log, please check the following information: Verify whether DTCs B228229, B228287, and B226656 are present in either A or A+S. Verify that Status Schlüssel‑ID = "ID is not valid" and Anlernstatus = "IC is initialized", as shown in the attached image (image_2). Please run the XENTRY guided test for the listed DTCs and provide the results.