P38 - suspension pressure switch

G

Geo1

New Member

Posts

59

• Aug 22, 2010

• #1

Does anyone have instructions for replacing the Air Suspension Pressure Switch on a 2000 P38

My suspension "stuck up" and the auto electrician hooked the car up to his laptop to reset and it was reported that there was a fault in the pressure switch

Any help greatly appreciated

Thanks

Geo1

 

dogsbody

Very senior member

Posts

10,685

Location

Bristol

• Aug 22, 2010

• #2

Much as I hate to go against an 'auto electrician' I'm at a loss trying to think of one 'pressure switch' that would cause the suspension to lock-out at height and then refuse to answer to the height switch.

There are innumerable threads and posts on here about the suspension and it's quirks and I might suggest that you put the kettle on and have a good nose around. What you will find very quickly is that you can buy a connection lead and a c.d. (very cheaply) and then see what your suspension is doing for yourself, with paying an auto electrician.

 

Datatek

Well-Known Member

Posts

45,026

Location

Near Poitiers SW France

• Aug 22, 2010

• #3

Unlikely to be the pressure switch. More likely to be a height sensor giving a dodgy reading, it will eventually go to a hard fault and drop to the bump stops with the dreaded Slow 35mph message on the dash.
As dogsbody say's, download the free software from www.rswsolutions.com buy a cable and check it yourself. Or buy an EAS Kicker from Blackbox Solutions.

 

rewmer

Well-Known Member

Posts

2,082

Location

Clacton, Essex, UK

• Aug 22, 2010

• #4

The air pressure switch fault can be a bit vague.It may be that the pump is goosed, or you have a leak somewhere. My advise to anyone with EAS problems is to do a valve block and pump re-build before doing anything else.

 

Datatek

Well-Known Member

Posts

45,026

Location

Near Poitiers SW France

• Aug 22, 2010

• #5

As rewmer say's pressure switch fault can appear for a variety of reasons, none of them to do with the pressure switch. First step is to identify the fault.

 

everlatesparky

Active Member

Posts

811

Location

Sheffield

• Aug 22, 2010

• #6

Had exactly this fault....turned out it was the driver pack at fault but that does'nt show up on the software......was from looking on here that i changed the pack...been fine for a year now.