2020 Mercedes-Benz SL550 technical service bulletins
81 technical service bulletins and manufacturer communications cover the 2020 Mercedes-Benz SL550.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic...
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Only vehicles with a variable transfer case are affected
- Clanking noise from the area of the speakers in the doors
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic...
- During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time
- This document is intended as a pre-case diagnostic reference for transmission related concerns
- Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements...
- The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the...
- After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the...
- Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed,...
- There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper...
- The part numbers listed in the chart below should no longer be installed, and any existing stock must be...
- Headlamp, front fog lamp leaky or fogged
- Headlamp, front fog lamp leaky or fogged
- 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active...
- Headlamps leaking or fogged
- Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure...
- (Original LI document #: LI27.35-P-079039) Clicking noises from the electro-hydraulic control unit (EHS)...
- Possible complaints about shift quality, issues with learning the park lock, and slipping/rinse entries in...
- Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle,...
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Headlamp, front fog lamp leaky or fogged
- A clicking/ticking/taping noise from underneath the vehicle with engine off during ECO stop event or after...
- During a phone call, the called party has difficulty understanding/cannot understand the driver, or...
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end)
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick...
- Rear lamps fogged up/not leaktight
- Only vehicles with a variable transfer case are affected
- Washer fluid system leaks
- Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements
- Headlamp or front fog lamp leaky or fogged
- To insure vehicle down time is kept at a minimum and all required information is available when case is...
- Headlamps fogged or droplets forming
- Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic...
- The steering wheel generates grinding noises between the steering wheel and steering column switch module...
- Noises in the steering column area when steering
- Electrical system
- Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats...
- The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle
- Electrical system
- The Mercedes me connect services cannot be activated
- Engine and engine cooling: exhaust system
- This extended warranty applies to the following condition that may necessitate the repair or replacement...
- Tailgate opens unintentionally
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- The garage door hand transmitter cannot be initialized with the integrated garage door opener in the...
- MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
- Coolant warning in instrument cluster
- Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"
- Replace automatic transmission
- Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect...
- The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In...
- The software for the transmission control unit on the above model series vehicles transferred to you does...
- Check engine indicator light active and fault code P261029/P02FF85/P02FF02 stored in engine control unit
- Information Label on Tire Sealant
- EASY-Pack liftgate does not fully open
- Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
- Gasket may settle causing a slight oil leak.
- Software update of COMAND Online control unit.
- The COMAND unit does not start or the display remains dark.
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