E90 dashboard antics

[miniman]

Anyone got any thoughts on what's causing crazy dashboard action on a mate's E90? Multiple warning lights ping up, speedo drops to zero then picks back up again. Everything from ESC to tyre pressure warnings.

If it was an E39 I would say ignition switch but surely they sorted that out so many years later?

[helix402]

Get the fault memory read and go from there.

[TheHoof]

As suggested, get the codes read however they are similar symptoms to when our E91 lunched a wheel speed sensor. After the speedo wavered a bit & returned to normal, the full list of things we had reported as inoperable were:

DTC
ABS
Flat Tyre Monitoring
Hill Start Assist
Cruise Control

There is one sensor per wheel and shortly after replacing one, the other on the same axle also gave up.

I have no idea how much it would have cost as it was repaired under warranty however ECP have pattern parts for ~75 quid and access is easy once you've got the car up in the air if you're willing to give it a go:

http://www.pelicanparts.com/BMW/techarticles/BMW-3...

[mudster]

Firstly check for fault codes.

Then check the battery voltage. It causes all sorts of electrical gremlins if voltage is low.

I repeatedly had the yellow steering lock failure when the battery was on it's way out. If it had turned red, it was a new column which is extremely expensive.Replaced the battery and not been a problem since (about 3 years).

[Billyray911]

I had multiple warnings on my E91 a few years ago.It was just down to a duff battery in my case.