S120215102C (9658917780) – used gearbox control unit
On this page you can buy an original Siemens VDO SIM82 control unit for the SensoDrive / 2-Tronic automated manual gearbox. It is a used unit, bench-tested before shipping. Key numbers: S120215102C and 9658917780.
Application and selection
- Confirmed application: Citroën C2 1.4 HDi.
- The list is not closed – a missing car does not rule out compatibility, and a listed model does not guarantee it.
- Numbers S120215102C and 9658917780 on the label of your original unit decide – a different letter at the end of the number means a different version.
Numbers on the label
| Label | Number (different formats) |
| Control unit number | S120215102C / S120215102 C |
| Software (SW) | SW9658917780 / 9658917780 |
| Hardware (HW) | HW9640922780 / 9640922780 |
| Control unit type | SIM82 |
When to suspect the gearbox control unit?
A control unit fault may be indicated by:
- the gearbox goes into limp mode,
- jerking when pulling away or changing gear,
- no communication with the gearbox control unit in diagnostics,
- the gearbox will not engage a gear or stays in neutral (N).
Note: the cause may also be the clutch or gear-shift actuator. A gearbox diagnosis before buying will rule this out.
See also
Other versions of this type of control unit (always choose by the label number): S120215001D / 9652762580, S120215001G / 9655613180, S122754002B / 9660353180, S120217001C / 9658917180, S122754252D / 9663401380.
Contact and warranty
Not sure whether the number matches? Contact us. The control unit has a warranty – 6 months. Other control units: Citroën Transmission Control Units (TCU).
Frequently asked questions about control unit S120215102C
| Question |
Answer |
| Which cars does this control unit fit? |
Confirmed application: Citroën C2 1.4 HDi. The label number has the final say. |
| How do I know that S120215102C will fit? |
The label of your unit must show the same numbers: S120215102C and 9658917780, including the letter at the end. |
| How does an automated manual gearbox differ from an automatic? |
It is a conventional gearbox with a clutch – gear changes and the clutch are operated by electronically controlled actuators. It has no torque converter like an automatic. |