Mercedes C220 CDI limp mode, faults not clearing. Faulty ECU. Fault finding and repair.

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Hi

This was PITA to resolve... but, I got it sorted in the end!
The car came in limp mode, not revving above 3k and very sluggish...
It ended up by being among other issues, a faulty IC in the actually ECU, engine control module, which luckily I kinda had the parts to get it repaired.
Follow me on this video to see how I got the the bottom of the problem, and how to resolve it.

The car came with other issues though, in case you want to those repairs the links are below...

Faulty drivers door lock: https://youtu.be/psfed0ojpZc

Remote not working: https://youtu.be/DOzHN3-xCKo

Flux used: NC-559-ASM-UV
https://rover.ebay.com/rover/1/710-53481-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338343363&mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2FNC-559-ASM-UV-TPF-Flux-Anti-wet-100g-AMTECH-BGA-Rework-Reballing-Flux-Paste-New%2F331918445854%3Fhash%3Ditem4d47e18d1e%253Ag%253ASxMAAOSwM4xXakjw%26LH_PrefLoc%3D1%26_sacat%3D0%26_nkw%3D%2BAMTECH%2BNC-559-ASM-UV%26_from%3DR40%26rt%3Dnc

To clean: Isopropyl Alcohol
https://rover.ebay.com/rover/1/710-53481-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2FISOPROPANOL-Alcohol-Isopropyl-PURE-99-9-LAB-GRADE-Jerry-Container-1L%2F184287956670%3Fhash%3Ditem2ae86b0ebe%3Ag%3A3tcAAOSw9BReuS3e&campid=5338344466&toolid=20008

Fiber Glass Cleaning Pen:
https://rover.ebay.com/rover/1/710-53481-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2FGlass-Fibre-Scratch-Remover-Pen-Pencil-Brush-Cleaner-of-Rust-Dirt%2F114122618800%3Fepid%3D16007371512%26hash%3Ditem1a923cf7b0%3Ag%3AKLUAAOSwb5ZeTYZN&campid=5338344466&toolid=20008

Soldering Iron: Temperature controlled soldering station.
https://rover.ebay.com/rover/1/710-53481-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2F75W-PROFESSIONAL-WEP-939D-SOLDERING-IRON-STATION-ESD-SAFE-LEAD-FREE-UK-F-C%2F182354855995%3Fepid%3D2084883635%26hash%3Ditem2a7532483b%3Ag%3A0gMAAOSwYUZcAJ2e&campid=5338344466&toolid=20008

Hot Air Gun Station:
https://rover.ebay.com/rover/1/710-53481-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2F858D-SMD-Digital-Soldering-Hot-Air-Gun-Iron-Desoldering-Rework-Station-700W%2F143323054990%3Fhash%3Ditem215eb8438e%3Ag%3AasAAAOSws3ldIumm&campid=5338344466&toolid=20008

Desoldering Vaccum Station:
https://rover.ebay.com/rover/1/710-53481-19255-0/1?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fitm%2FDESOLDERING-STATION-UK-EU-PLUG-80W-D00672-By-DURATOOL%2F283875042545%3Fepid%3D13033623731%26hash%3Ditem42184564f1%3Ag%3ALsQAAOSw7hReuZHP&campid=5338344466&toolid=20008
Hope you enjoy the video.
Any questions or comments please put them below.
Like always, thank you for watching!

Видео Mercedes C220 CDI limp mode, faults not clearing. Faulty ECU. Fault finding and repair. канала LM Auto Repairs