Question: How do you replace and program Mercedes ME 9.7? Possible to do it within 300 usd?
Answer: There are usually 3 optional ways. And the cheapest is 299 usd for all.
Optional solutions:
There are 3 solutions available if you have a ME 9.7 ECU damaged!
| Method | ECU | Programmer | Adapter | Cost |
| Expensive
(the dealership)
| Original ME 9.7 ecu from the Mercedes dealership | Original SD connect C4 for online programming | No | 10,000+ usd |
| Popular | Functional ME 9.7 ecu on the web | SD connect C4good china clone for online programming | No | 600 usd around |
| Cheapest | Functional ME 9.7 ecu on the web | Ktag china clone to read and write data | Renew cable | 299 usd |
In detail…
- expensive, the way same as the dealership does!
You can buy the original ECU ME9.7 and SD connect C4 emulator from the dealership.
Replace it and do online programming with C4
- popular among Mercedes owners
It’s popular because SD connect c4 is TOP 1 Mercedes diagnostic and programming tool.
You can buy a decent ME 9.7 ECU on the web. (Refer to the tip below to get a good ECU)
Replace it and do online programming with C4
- cheapest and tested successfully
The cheapest way is: Ktag + decent ECU + ME 9.7 renew cable!
source: http://www.obdii365.com/wholesale/benz-me97-ecu-ecm-engine-computer-with-ktag-renew-cable.html
the full kit with the best price: 299 usd
tip: you can see a lot of ECUs for sale online, but pls do buy an ECU that confirms to work good. here’s the functional ME9.7 tested by many Mercedes owners successfully:
the ecu can be used for any Mercedes equipped with ME 9.7:
| Series | Models | Chassis NO | Engine Model（ME9.7） |
| C Series | C230 | 203.052 | 272.920 |
| C Series | C280 | 203.054 | 272.940 |
| C Series | C280 | 204.054 | 272.947 |
| E Series | E350 | 211.056 | 272.964 |
| E Series | E280 | 211.054 | 272.943 |
| E Series | E300 | 12.054 | 272.952 |
| E Series | E350 | 207.356 | 272.961 |
| CLK cars | CLK280 | 209.354 | 272.940 |
| CLK cars | CLK350 | 209.356 | 272.960 |
| CLS sports cars | CLS350 | 219.356 | 272.964 |
| CLS sports cars | CLS300 | 219.354 | 272.943 |
| SLK sports cars | SLK280 | 171.454 | 272.942 |
| SLK sports cars | SLK350 | 171.456 | 272.963 |
| S Series | S350 | 221.56 | 272.965 |
| S Series | S4100 | 221.195 | 272.974 |
| M Series | ML350 | 164.186 | 272.967 |
| M Series | ML300 | 164.182 | 272.945 |
| R Series | R350 | 251.165 | 272.967 |
| R Series | R300 | 251.154 | 272.945 |
| GLK cars | GLK300 | 204.981 | 272.984 |
| GLK cars | GLK350 | 204.987 | 272.971 |
The cheapest way:
When you get the original ECU data, just use this renew cable to connect to Ktag to write to Mercedes ME9.7 ME 9.7 ECU. With this cable, you won’t need to open the ECU to write data anymore.
You need:
Ktag/KTM100 (to help write data)
Mercedes ME 9.7 ECU (for replacement)
Renew cable (to write data into the new ECU)
Note: The ME9.7 renew cable CANNOT be connected to original ME9.7 ECU computer. It is confirmed to work with Me 9.7 ecu from obdii365.com without issue.
How to replace and program Me 9.7 with Ktag:
Step 1: disassemble the ECU from car
Step 2: read and save original ECU data with Ktag programmer
Step 3: connect the new ECU and Ktag with the ME9.7 renew cable
Step 4: write the data into the new ECU with K-tag
Done!
Important: Ktag – Which version?
There are many Ktag versions incl. the original and EU/China clones.
Here, it’s possible to have a good success if you have a decent China clone.
This is the latest Ktag (firmware 7.020 software 2.25, red pcb inside)that’s confirmed to work perfectly with Me9.7 read and write:
The test on W203 Me9.7:
Ktag 7.020 ksuite 2.25 can read and write ME 9.7 without issues!
299 usd make it.
