# Service bulletin LI77.30\-P\-070145

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11031659
- Published by NHTSA: 2026\-04\-29
- Manufacturer's number: LI77.30\-P\-070145
- Manufacturer's date: 2026\-04\-28
- NHTSA component: STRUCTURE:BODY

## NHTSA's summary

Complaint Damaged cords/tensioning cables at the soft top interior trim with the following characteristics: \- Cord/tensioning cable torn \- Cord/tensioning cable worn \- Cord/tensioning cable torn out \- Cord/tensioning cable \- sheathing damaged Cause High tensile stresses on the cords/tensioning cables during the soft top sequence Remedy 1.\) Check which cord\(s\)/tensioning cable\(s\) is/are damaged: • If damage is found on one of the cords/tensioning cables of the soft top interior trim, always replace the cords on the left and right as a pair. • If damage is determined at one of the cords from among no. 3 \(if present\), no. 4 or no. 7 from the soft top interior trim, then preventively replace all cords/tensioning cables of no. 3 \(if present\), no. 4 and no. 7 on the left and right. • This also applies to the new version of the soft top interior trim cords/tensioning cables for no. 4 and no. 7 \(without cord/tensioning cable no. 3\) on the left and right. 2.\) Cut off the fastening rivets/eyelets: • See Fig. 6 \- Illustrates a riveted fastening of the eyelet. See also document AR77.33\-P\-2500LWR \- Remove/install tensioning cables of the headliner. 3.\) Press the clamping ring connection out of the receptacle in the soft top interior trim: • See Fig. 7 \- Illustrates the receptacle/clamping ring of the soft top interior trim. 4.\) Cut/remove the clamping ring connection from the cord using side cutting pliers: • See Fig. 8 \- Separating the clamping ring connection using side cutting pliers. 5.\) After removing the clamping ring connection and for routing the new cord/tensioning cable: • Briefly heat the end of the new cord/tensioning cable with a lighter or similar tool. This will strengthen the fibers at the front somewhat and slightly round them off, • which will then make it easier to pull them through the duct with a cutting wire. • See Fig 9. \- Slightly heating the end of the cord/tensioning cable with a lighter or similar tool 6.\) Attach auxiliary cutting wire \(0.3 mm or 0.8 mm\) at the end of the new cord/tensioning cable: • Perforate/attach cutting wire approx. 5 mm from the end of the cord/tensioning cable. • Bend the cutting wire into shape and position the cord/tensioning cable. • See Fig. 10 – Auxiliary cutting wire. 7.\) Pull the new cord/tensioning cable through the duct with the auxiliary cutting wire and, if necessary, with pliers: • See Fig. 11 – Auxiliary cutting wire/pliers. 8.\) Attach the clamping ring at the cord/tensioning cable with pliers and leave the cord/tensioning cable protruding by approx. 3 mm ±1. Crush the clamping ring to a thickness of 3.75 mm ±0.25: • See Fig. 12 \- Receptacle for clamping ring connection/soft top interior trim. Note/recommendation: • To facilitate the work, the pull\-off device/workshop equipment W 221 589 04 33 can also be used to crush the clamping ring or the cable lug. • See Fig. 12A – Auxiliary tool/pull\-off device. 9.\) Press the clamping ring connection into the receptacle provided, and install the eyelet with the rivet in the intended position: • See Fig. 13 \- Receptacle for clamping ring connection/soft top interior trim. • See Fig. 14 \- Positioning the rivet with eyelet \- example. Further information on optimizations: Due to optimization measures, all new soft top interior trim parts are manufactured without the cord/tensioning cable no. 3. In series production and in repair cases, the cord/tensioning cable no. 3 is no longer required. Therefore, in repair cases, it is only replaced if it is already present in the vehicle. All cords/tensioning cables currently used in series production and as replacement parts have a high resistance to abrasion. \- Tape guide for the cords no. 3 \(if present\) and no. 7: • Make sure that cords/tensioning cables 3 \(if present\) and 7 are routed behind the tape. As a reference dimension, the tape should be positioned approx. 10 mm from the guide eyelet. • See attachment for further instructions.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031659-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031659-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame

## Vehicles listed

- 2018 MERCEDES BENZ C 300 4MATIC
- 2017 to 2021 MERCEDES\-BENZ AMG C43
- 2017 to 2021 MERCEDES\-BENZ AMG C63
- 2019 to 2021 MERCEDES\-BENZ AMG C63 S
- 2019 to 2021 MERCEDES\-BENZ AMG E53
- 2017 to 2021 MERCEDES\-BENZ C 300
- 2021 MERCEDES\-BENZ C 300 4MATIC
- 2018 MERCEDES\-BENZ E 400
- 2018 MERCEDES\-BENZ E 400 4MATIC
- 2019 to 2020 MERCEDES\-BENZ E 450
- 2019 to 2020 MERCEDES\-BENZ E 450 4MATIC
- 2019 to 2020 MERCEDES\-BENZ E 450 4MATIC CABRIOLET
- 2019 to 2020 MERCEDES\-BENZ E 450 4MATIC COUPE

JSON: [/v1/bulletins/11031659](/v1/bulletins/11031659)

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