MajorCommonTransmission

Mercedes-Benz Vito: 722.6 5-speed auto conductor plate failure and limp mode (W639)

722.6 5-speed auto conductor plate failure and limp mode (W639) is a common transmission fault on the Mercedes-Benz Vito on the 2004–2014 cars, and we rate it major. Putting it right costs $900 to $2,200 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 16 documented faults on the Mercedes-Benz Vito.

Vehicle: Mercedes-Benz Vito
Years: 2004–2014
Gearbox: auto
System: Transmission

This page covers the Mercedes-Benz Vito as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Mercedes-Benz Vito faults16 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Mechatronic / valve body yet. We would rather show none than show a picture of a different part.

What goes wrong

Automatic W639 Vitos use the 722.6 5-speed, whose internal conductor (electronic) plate carries the speed-sensor signals and fails with age, dropping the van into limp mode - typically stuck in second or third - with gearbox fault codes. The conductor plate and 13-pin connector are a moderate independent repair, but the codes need Mercedes-capable diagnostics to clear. Common on higher-km vans that never had a transmission service.

What you would notice

Van stuck in one gear (limp mode)
Harsh or delayed shifts
No kick-down / won't shift up
Transmission fault codes

How to check it

Where to look. Automatic transmission - internal conductor plate and 13-pin connector

Drive through all gears and confirm smooth up and down changes and a working kick-down.
Any 'stuck in gear' behaviour or harsh shifting points at the conductor plate.
Ask for transmission service history - the 'lifetime' fluid is often never touched.

Parts involved: Mechatronic / valve body.

What it costs to put right

$900 to $2,200 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has it ever gone into limp mode or stuck in a gear?”
“Has the transmission fluid and conductor plate been serviced?”

Now check the Mercedes-Benz Vito you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

MBWorld.org 'W639 Vito stuck in second' thread
ecutesting.com / batransmissions Mercedes 722.6 conductor plate faults

Mercedes-Benz Vito buyer questions

Is 722.6 5-speed auto conductor plate failure and limp mode (w639) serious on a Mercedes-Benz Vito?

We rate it major and common on the Mercedes-Benz Vito. Automatic W639 Vitos use the 722.6 5-speed, whose internal conductor (electronic) plate carries the speed-sensor signals and fails with age, dropping the van into limp mode - typically stuck in second or third - with gearbox fault codes. The conductor plate and 13-pin connector are a moderate independent repair, but the codes need Mercedes-capable diagnostics to clear. Common on higher-km vans that never had a transmission service.

How much does it cost to fix on a Mercedes-Benz Vito?

$900 to $2,200 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Mercedes-Benz Vito years are affected?

Our research records this fault on the 2004–2014 Mercedes-Benz Vito. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Drive through all gears and confirm smooth up and down changes and a working kick-down. Any 'stuck in gear' behaviour or harsh shifting points at the conductor plate. Ask for transmission service history - the 'lifetime' fluid is often never touched. Look here: Automatic transmission - internal conductor plate and 13-pin connector