Evening all,
I'm hoping that someone can shed some light on or offer advice on the issues I'm experiencing.
I bought the Vito in June this year. It's a 130cdi automatic, and has been great until around three weeks ago and this is the sequence of events leading up to the start of the ESP light issues.
The parking brake didn't work evenly and the brakes sqealed when turning right, so all the wheels were removed, brakes cleaned, parking brake linkaged lubricated and adjusted.
At the same time, a dedicated loom was added for a towbar, which being CAN, is a single wire on a multi plug, connected into the the loom to the Right above the pedals.. There is also an occaisional drip of water onto the passenger mat, which I believe is due to an issue with the aircon drain, though this is yet to be proved to be the case, but I don't suspect a winscreen leak or similar water ingress.
Shorty after, the ESP light issues developed.
In most cases, there are three faults registered. ESP, Speedtronoc and the road wheel symbol, which as guess is ABS. Sometimes, the rev counter drops to zero and the engine stutters. Occaisionally, the coolant temp warning illumintes and the speedo also drops to zero and when it comes back, all the warning lights illuminate as they do at start up. When the binnicle dies/re starts, a relay can be heard over to the left of the dash, roughly behind the radio, or maybe further over towards the passenger side. The van does occaisionally go into "limp" mode, which isn't much of a limp, as it still easily hits the speed limiter at 80mph.. When the ignition is switched off, the same three messages are displayed. When re-started, the messages are cleared.
The van can drive for a couple of hours or sometimes days without issue. Other times, it starts within a few minutes of start up. Having lived with it for a while, the problems tend to occur on uneven road surfaces, or after hitting a bump or pothole. A couple of times, it has started after a Right turn.
I suspect either a faulty wheel speed sensor/connection, or accidentally disturbed connection under the dash while fitting the towbar electrics.
Has anyone else experienced a similar problem? WHich connectors should I check, which relaye to the ESP/Speedtronic and instrument cluster?
I read a post on here regarding a similar problem with a W638, where it was suggested that resistance was checked through the wheel speed sensors, via the plug on the side of the ABS pump. Does anyone know if the pins are the same for the 638 and 639? What resistance should I expect?
Many thanks in advance for any suggestions.
Mark
I'm hoping that someone can shed some light on or offer advice on the issues I'm experiencing.
I bought the Vito in June this year. It's a 130cdi automatic, and has been great until around three weeks ago and this is the sequence of events leading up to the start of the ESP light issues.
The parking brake didn't work evenly and the brakes sqealed when turning right, so all the wheels were removed, brakes cleaned, parking brake linkaged lubricated and adjusted.
At the same time, a dedicated loom was added for a towbar, which being CAN, is a single wire on a multi plug, connected into the the loom to the Right above the pedals.. There is also an occaisional drip of water onto the passenger mat, which I believe is due to an issue with the aircon drain, though this is yet to be proved to be the case, but I don't suspect a winscreen leak or similar water ingress.
Shorty after, the ESP light issues developed.
In most cases, there are three faults registered. ESP, Speedtronoc and the road wheel symbol, which as guess is ABS. Sometimes, the rev counter drops to zero and the engine stutters. Occaisionally, the coolant temp warning illumintes and the speedo also drops to zero and when it comes back, all the warning lights illuminate as they do at start up. When the binnicle dies/re starts, a relay can be heard over to the left of the dash, roughly behind the radio, or maybe further over towards the passenger side. The van does occaisionally go into "limp" mode, which isn't much of a limp, as it still easily hits the speed limiter at 80mph.. When the ignition is switched off, the same three messages are displayed. When re-started, the messages are cleared.
The van can drive for a couple of hours or sometimes days without issue. Other times, it starts within a few minutes of start up. Having lived with it for a while, the problems tend to occur on uneven road surfaces, or after hitting a bump or pothole. A couple of times, it has started after a Right turn.
I suspect either a faulty wheel speed sensor/connection, or accidentally disturbed connection under the dash while fitting the towbar electrics.
Has anyone else experienced a similar problem? WHich connectors should I check, which relaye to the ESP/Speedtronic and instrument cluster?
I read a post on here regarding a similar problem with a W638, where it was suggested that resistance was checked through the wheel speed sensors, via the plug on the side of the ABS pump. Does anyone know if the pins are the same for the 638 and 639? What resistance should I expect?
Many thanks in advance for any suggestions.
Mark
