ECU 55253513 – what to know
We offer a working MJD 8F3.X1 unit (Magneti Marelli) with part number 55253513. It controls the engine of the Fiat 500L 1.3 Multijet. We test every unit before dispatch.
Numbers to compare with your label
The housing of the original ECU carries a sticker with its numbers. On this unit they are:
- Part number: 55253513
- ECU type: Magneti Marelli MJD 8F3.X1 / MJD8F3.X1
Virgin version – no programming
We ship ECU 55253513 as Virgin. After fitting, it codes itself to the car and immobiliser – no programming is needed, as long as the part number matches and the immobiliser works.
On request we prepare an IMMO OFF version. The car will drive, but a red immobiliser warning stays on the dashboard and a fault remains in diagnostics that you cannot clear without pairing with the immobiliser. That is why we recommend Virgin.
Tests, options and warranty
- Every ECU is tested on the bench and fitted to our test car before dispatch.
- Cloning included: instead of the Virgin version we can transfer the data from your old ECU – the data from your current unit is required.
- Paid extra options: chip tuning, EGR OFF and DPF OFF.
- Warranty: 6 months.
Vehicle compatibility
This ECU was removed from a Fiat 500L 1.3 Multijet. Compatibility is decided by the part number on the label, not just by the model and year – compare number 55253513 and marking MJD 8F3.X1 with your ECU. A different part number means a different ECU version.
Possible symptoms of a faulty ECU
- the engine does not start, no injector control,
- no communication with the ECU during diagnostics,
- no power supply to the ECU although the fuses are fine,
- failure after water ingress or a short circuit in the wiring.
These symptoms can also have other causes – wiring, power supply or sensors. Run a diagnosis before buying.
If your ECU has a different part number, check 51918358 MJD 8F3.F7, 55267347 MJD 8F3.D9, 55261325 MJD 8F3.GG, 55250632 MJD 8F3.Q1 or the whole Fiat engine ECU category. About the manufacturer: FPT.
Common questions about ECU 55253513 MJD8F3.X1
How do I know that 55253513 will fit?
Check the sticker on your ECU. If it shows number 55253513 and type MJD 8F3.X1, it is the same version. The car model and year alone are not enough.
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Does the Virgin MJD 8F3.X1 need programming?
No. After fitting, ECU 55253513 codes itself to the car and immobiliser. The condition is a working immobiliser and a matching part number.
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Do you offer chip tuning, EGR OFF and DPF OFF for this ECU?
Yes, these are paid extra options that we carry out on request before the ECU is shipped.
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Is cloning ECU 55253513 charged extra?
No, cloning is included in the price. We transfer the data from your old ECU instead of preparing the Virgin version – we need the data from your current unit.
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