PMS Failure When Installing A New Battery

[ericve]

PMS Failure When Installing A New Battery
Since installing a new battery in my 2006 Porsche 911 I have a PMS failure message and the steering wheel cluster (blinkers, wipers...) don't work. Has anyone else had this type of issue? Can this be fixed with a scan tool or do I need to bring it in to the mechanic?

[cnavarro]

Have you tried driving it? PSM will throw a fault after hard reset (battery change) for loss of steering wheel calibration.

[ericve]

Yes, I drove it for about 20 min. but the PSM failure message and the blinkers and wipers still don't work. All the fuses look to be OK.

[cnavarro]

I'd pull each fuse and inspect. Try to check the easy stuff first.

The rest will probably require a PIWIS if there is a coding issue. I don't see how changing the battery could result in damaging the multi-function switch in the column.

[tonythetarga]

I wonder if this is relay connected. Might check that as well. They might be on the same relay.

[ericve]

So I just drove the car for about a 1/2 hour, still no change.
I unplugged and inspected every fuse and there were no issues.
Hey Tonythetarga, is the relay your speaking about in the top of the fuse panel?
Does anyone have a recommendation for which scan tool to buy? I was looking at the icarsoft POR 2.

[ericve]

So I took the car out for about a 1/2 hour ride and the PSM error is still there.
Cnavarro: I took all the fuses out and inspected them there was 1 blown fuse that I replaced but it had nothing to do with the PSM or steering cluster. Do you have any suggestions on a good scan tool? I was looking at the icarsoft POR 2.
Tonythetarga: is the relay you mentioned the one at the top of the fuse panel?
Thanks!!

[FPB111]

Lead acid, AGM, Li-ion? Not all batteries are equal.
Disconnect it for a few minutes, then reconnect. Make sure that the steering wheel is straight with no key in the ignition when/if you disconnect. Did battery or a charger or jumper wires ever get connected reversed polarity?

And remember to be really, really nice to her during PMS or you could be in a world of hurt.

[FPB111]

Evidently it is not unusual.

https://www.6speedonline.com/forums/997/163260-psm-failure-warning-after-batter-change-2.html

[ericve]

Thanks for all the help. Unfortunately with the snowy weather here in NY I have not been able to do much more. I'm still wondering if anyone has any recommendations for a good scan tool.

[JFP in PA]

Durametric...........

[FPB111]

Did you try turning the wheels all of the way right and then all of the way left then re-centering with the engine running?

[ericve]

OK so yesterday I tried starting the car and turning the wheel all the way to the right then all the way to the left and re-centering then drove it for a few minutes. Still no luck. Could this be a relay problem? the only relay I know of is in the fuse box, are there any others?

[roblav]

I thought PMS was something men have to deal with??? but not from cars...

[abporsche1]

PMS is followed in later years by MentalPause. Once you get the Porsche out of the garage, most of the time it isn't allowed back in.

Barry

[kenschel]

thanks to the above info, I got this resolved. I was installing a new radio headunit and so had disconnected the battery. PSM failure warning came up right away after reconnecting and starting up. I straightened the steering wheel, disconnected battery, waited a few minutes, reconnected. Then I did the full right turn/full left turn thing with the steering wheel, and drove slowly up the street for a few minutes. Warning cleared.

Thank you!

[Gibson87]

I had a similar problem with a 91 964 MyBalanceNow, since the battery was new I removed an amplifier and other aftermarket stereo equipment, the problem persisted.
I checked all grounds etc.....
Mark at Performance Independent Porsche found two issues
1) Bad Battery
2) Wrong size battery for the car
never had a problem since....