2023 Mercedes-Benz Cls 450 problems, complaints & recalls
Most-reported problem areas: Wheels (3)
Safety recalls (3)
Electrical System:wiring 2024-02-09 · campaign 24V100000 · 12,191 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 CLS450, E450, E450 All-Terrain, AMG E53, AMG GT43, AMG GT53, and 2021 AMG CLS53 vehicles. The 48-volt ground cable connection located in the engine compartment may not be tightened properly and may result in the ground cable overheating.
Risk: An overheated ground cable increases the risk of a fire.
Fix: Dealers will inspect the 48-volt ground cable connection and repair it as necessary, free of charge. Owner notification letters were mailed March 22, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024MMNNNN.
Electrical System:adas:blindspot:sensors 2023-08-11 · campaign 23V574000 · 880 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 E450, E350, AMG E63 S, AMG E53, CLS450, AMG GT53, and AMG GT43 vehicles. Due to a software error, the exit warning system audio and visual warnings may fail to alert occupants about approaching vehicles.
Risk: Failure to alert occupants of an approaching vehicle can increase the risk of a crash or injury.
Fix: Dealers will update the exit warning system software, free of charge. Owner notification letters were mailed September 8, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023080005.
Fuel System, Gasoline:delivery:fuel Pump 2023-06-26 · campaign 23V445000 · 143,551 vehicles
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Risk: A loss of drive power can increase the risk of a crash.
Fix: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
Service bulletins (114)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Power Train 2026-09-26 · LI27.00-P-073124 · Service Bulletin/Repair Instructions
complaint customer complaints relating to automatic transmission 725.0 (nag3 classic /9g‑tronic automatic transmission) and 725.1 (nag3 facelift/9g‑tronic automatic transmission facelift) for faster, more effective and more targeted diagnosis, intelligent predictive repair (ipr) has been developed a
Engine 2026-09-26 · LI18.00-P-073137 · Service Bulletin/Repair Instructions
complaint sporadic warning message in instrument cluster "engine oil pressure, stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. cause directional control valve may stick. remedy 1‑ read off oil level in instrument cluster and correct if necessary. 2‑ perform approx
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
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 vibra
Engine 2026-09-17 · LI20.10-P-075374 · Service Bulletin/Repair Instructions
complaint red coolant warning in instrument cluster. fault codes u019f00 or u019f87 current/stored in mrg1 control unit. cause various causes remedy perform guided test for fault code u019f with xentry diagnosis. verify the following connections are clean and tight. correct any problems and retest p
Structure:body 2026-09-14 · LI82.62-P-078631 · Service Bulletin/Repair Instructions
complaint clanking noise from the area of the speakers in the doors. cause under analysis. remedy to narrow down the cause, first of all remove the door trim. • if the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary,
Power Train 2026-09-04 · LI27.00-P-073124 · Service Bulletin/Repair Instructions
complaint customer complaints relating to automatic transmission 725.0 (nag3 classic / 9g‑tronic automatic transmission) and 725.1 (nag3 facelift/9g‑tronic automatic transmission facelift) for faster, more effective and more targeted diagnosis, intelligent predictive repair (ipr) has been developed
Showing the 6 most recent of 114 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-03-16 · Wheels“description of defect: i am reporting a chronic and dangerous structural failure of the factory-equipped alloy wheels on my 2023 mercedes-benz cls 450 4matic. since purchase, this vehicle has suffered 8 documented incidents of wheel failure, consisting of 5 rim cracks and 3 complete wheel replacements. the failures are occurring under normal, paved…”
2025-02-08 · Wheels“this vehicle has 6,600 miles on it. all 4 wheels have been bent driving on normal roads at normal speed. there have been 2 sidewall tire bubbles as a result. and after having all wheels straightened one of the wheels has now cracked. this caused the tire to deflate and the vehicle can no longer be driven. is speaking with a wheel shop this is …”
2024-08-15 · Wheels“the car is equipped with continental procontact gx ssr 245/40r19 runflat tires in the front. since january of this year i have replaced the front tires 5 times. once for the left front and four times for the right front. one time it was due to a bubble in the sidewall. other four were from the sidewall tearing vertically in 2 places a few inche…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.