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Fiat 500 information
Fiat 500 semi-automatic gearbox
(Semi-)automatic gearbox problems
Read moreThe automatic Fiat 500 has a semi-automatic gearbox (Dualogic): a robust and simple system that generally means low fuel consumption and trouble-free driving. If something does go wrong, the right diagnosis is what matters most.
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- CarFiat 500 automatic
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Reserve the courtesy car via WhatsAppHow it works
What is a semi-automatic gearbox?
A semi-automatic gearbox is basically a normal manual gearbox in which a robot replaces both your left foot (operating the clutch) and your right hand (changing gear). The system consists of four parts:
-
1
Hydraulic pump
A pump with a reservoir builds up the pressure that operates the robot.
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2
Gear-shift unit
Selects the required gear using hydraulic pressure.
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3
Clutch unit
Engages and disengages the clutch using hydraulic pressure.
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4
Control unit
The brain of the system, which controls all of these processes.
Why it goes wrong
Simple system, complex faults
The automatic Fiat 500 has been around since 2007, which is why we see more and more problems with the gear-shift system. The system may look simple, but that does not mean the problems are.
Because it is a fairly complex process, faults can occur in many areas and they are hard to pin down. On top of that, the fault codes often give garages no proper clue: the codes that are read out regularly point in the wrong direction.
A wrong diagnosis makes the repair expensive. Because wrong diagnoses are common, the repair usually costs far more than it really needs to.
Typical symptoms
- Suddenly jumping into neutral while driving
- Refusing to drive at all and staying in neutral
- Getting stuck in one gear
- Jerky clutch engagement and disengagement
- Squeaking, scraping or knocking noises from the gearbox
Diagnosis
Common fault codes
The symptoms above usually come with one or more of the following fault codes.
| Code | Component / fault | Description |
|---|---|---|
P060C-85P060C |
Transmission control unit faulty (general system fault) | Signal above permitted range |
P060A-79P060A |
Transmission control unit faulty | Mechanical linkage fault |
P1743-1CP1743 |
Clutch position sensor | Circuit voltage out of range |
P1743-15P1743 |
Clutch position sensor | Circuit shorted to battery or open |
P1773-7BP1773 |
Hydraulic circuit flow/pressure | Low fluid level |
P2911-77P2911 |
Clutch subsystem fault (clutch control or locked) | Commanded position not reachable |
P2915-72P2915 |
Gearbox subsystem fault (engagement failed) | Actuator stuck in open position |
P2917-71P2917 |
Gearbox subsystem fault (gear shift locked) | Actuator stuck |
P1810-79P1810 |
Clutch subsystem fault (clutch not opened before shifting) | Mechanical linkage fault |
Do you recognise any of these symptoms?
Get in touch. We make a targeted diagnosis, so you don’t pay for parts you don’t need.
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