Repairing the Volvo V70 Brake Pedal Position Sensor

After some years with error, “Engine System Service Required” coming and

going and in the end “Cruise” stopped working when the message was coming

up we decided to fix this once and for all. Brake Pedal Sensor Error Code 9400.

This is the article number for the new 106318-9065.1 V70AWD(2001-2004) or

1012871 or OEM 1060334 if you need a new one to Volvo C70(-2005), S60(-

2009), S70, V70(-2000), S80(-2006), V70 P26, V70XC(-2000), XC70(2001-

2007). The prices are between 100 to 180 Euro depends if original or OEM but

as we had repaired our Alarm Siren which had the same problem we decided to

take it apart to have a look before we bought one new. And as you can see it can

be repaired and probably will function for some more years before you have to

buy a new one.

To take out the sensor there is a simple lock ring. Bend down with a thin screw

driver in the gap opening of the metal ring on the left side, then the metal ring will

come up over the plastic house and you can put a very thin screw driver under it,

then you pull the ring towards you, first on the top then under the plastic house.

Then bend the ring towards you over the plastic house to the right, the ring will

stay in a holder on the right hand side of the plastic house. But be careful so you

don’t lose it down as we did when we afterwards should put it back again. See

picture. Be aware of the O-ring which you have to also take out so you don’t lose

it.

1 hour work. 24 hour waiting time for glue to harden.

Metal ring turned over to the right, sitting in

a holder.

Before you can take out the sensor you

have to put a small screw driver in the space

in the holder and bend carefully the metal

ring to the right. If you don’t the sensor will

not come out easily due to the ring still will

hold the sensor. Be careful the ring can get

out of the spring and fall down.

When you put it back afterwards we

recommend to use Wd40 on the o-ring, first

we did not but the unit would not go in to

the right position, not before we used

WD40 and it went in without using any

power at all. At the first when we did not

use WD40 we lost the ring somewhere into

the motor area and we could not find it

neither under or in the motor area, too

many places it could hide, so we had to

improvise and you can see from the picture

how we did it, using a EKK cable 1,5mm as it

fits into the spring where normally the lock

ring should be and twisted it hard and it

works without problem, we will try to see if

we can find or buy a ring later.

We used this knife to cut

down between the sensor

house wall and the

connector for the sensor.

After we glued it back we

put a strap just to fix the

house tight towards the

connector plastic when the

glue is draying.

O-Ring, don’t lose

it.

As there are different models on

the marked but we will only show

the one we have.

The one you see in the picture we

had and it was only broken in the

connection between PC-board and

connector, easy to fix by soldering.

Mark the distance you have to use

the knife down between the

plastic house and the connector

plastic, it is ca. 5mm deep you

have to cut out.

Be careful so you do not damage

the plastic house.

After you finished with the knife

you bend and pull back and forth

and the connector will come off.

But be careful.

After you glue it and put it

together you can easily test

with an ohm meter to see if it

is working. Shall be from

3500ohm to 100(0)ohm.

And you do not have to use a

lot of glue only so much it will

not fall apart. You can see

from our picture after we put

it back into the car it is not a

lot of glue.

Then there are several very good illustrations on the internet and one of them is this.

https://www.drive2.com/l/464444707762602263/

Good Luck!