This article will show you how to remove the instrument cluster. How to fix problems with dead, dark or flickering S-Class W220 instrument cluster. Repair display defective issues on the Mercedes-Benz S-Class W220 and CL-Class C215. There was a Recall Campaign Bulletin issues by Mercedes-Benz that covered any S-Class with instrument cluster problems up to 10 years old and unlimited miles which now has expired since the W220 are over 10 years old.
This article will list the most common problems with this cluster and solutions. You can try these repairs yourself. If these repairs seem to complicated, then read our alternative solution in the conclusion section, at the end of the article.
These instructions apply to:
S-Class: 1998-2006 S430 S500 S600 S55 AMG
CL-Class: 1999-2006 CL500 CL600 CL55 CL63 AMG
How to remove the cluster from Mercedes-Benz S-Class / CL-Class.
To repair this cluster you first need to remove it. Removing the cluster from a Mercedes-Benz S430/S500/CL500 is very easy. To remove the cluster you will need the following tools:
Watch the video on how to remove the cluster.
Common problems with S-Class / CL-Class instrument cluster
The instrument cluster on Mercedes-Benz S-Class uses LEDs and fluorescent tubes to create the illumination and backlighting for the gauges. It is very common for the cluster to start flickering and eventually completely burn out. There was even a recall for the cluster but it covered Mercedes-Benz cars up to 10 years old. With the S-Class W220 being over ten years old it is no longer able to have the dealer cover this repair under the recall. Once the instrument cluster starts to malfunction it will cause the 5-ampere fuse designated to the cluster, which is located in the engine bay fuse box, to blow.
For this repair you will need:
– 3 N-Channel MOSFET Transistors –T12 Torx Driver – Soldering Iron – Desoldering Braid This instrument cluster contains three MOSFETs (which stands for metal-oxide semiconductor field-effect transistor. It is a special type of field-effect transistor FET). Two common signs of the transistors going bad are: 1) the blown instrument cluster fuse 2) Transistor falls off and will be loose inside the cluster. To replace these transistors follow these steps:
- Remove instrument cluster.
- Unplug the electrical connector from the back of the instrument cluster.
- Remove the black plastic housing.
- Remove the screws that hold the circuit board using a T-12 Torx socket. Carefully release the plastic tabs using a flat blade screwdriver.
- Replace all three N-Channel MOSFET power switching transistors.
High Voltage Transformer
The next component that could fail in this instrument cluster is the high voltage transformers inside the cluster. To complete this repair you will need the tools mentioned in Step I plus the following:
S-Class Instrument Cluster Transformer
Instructions on how to replace the transformer.
- Remove the instrument cluster.
- Unplug the connectors near the rear of the cluster.
- Separate the cluster instrument housings.
- Remove the gauge needles from the instrument cluster. You can remove by pulling them out.
- Remove the LCD message screen.
- Remove gauge trim.
- Unsolder the fluorescent lamps and any LED lights that may be on the way.
- Access the circuit board and replace the defective transformers.Fluorescent tubes
The high voltage fluorescent tubes which create the illumination and the backlighting for the cluster and gauges fail over time. They may flicker and eventually die. You could replace the florescent tubes or even replace them with 12 Volt Led lights connected in series and feed. If can learn how to do this hack by watching this video here.
Hopefully, these instructions helped you to repair the instrument cluster on your Mercedes-Benz. But these repairs may not be for anyone and we understand if you don’t want to damage your instrument cluster even more. So what is the solution? Use an online service. There are several listings on eBay that offer reapir service for your instrument cluster. These repairs won’t break your bank account, and all your instrument cluster settings including the mileage remain the same. Here are a couple of services offered on eBay that we recommend.
- Mercedes-Benz Instrument Cluster Recall
- MBCluster – Mercedes S-Class W220 Lighting Repair / LED Upgrade