Memoryglide-function on power seats
LagerMember2016-04-12 at 13:42Post count: 114
I read through the “buying tips” – section.
It says there that the memoryglide-function on power seats is included in model years 1989-1991.
According to my owners manual it´s included in 1987 model year. Haven´t been able to test it yet but it should be there.
By the way I have seen some Powerseat-ECUs on ebay. How often do these fail?DaviesKeymaster2016-04-12 at 16:11Post count: 151
Good question. I know the mechanics of the switch were totally redesigned for 90 and 91. A big issue was safety so that the seats would stop if something (or someone) was in the way, so they wouldn’t crush a person trying to get in. I assumed that the 87 and 88 would move but not go back to the prior seat position. Good to know. Yes, test and let us know. We can correct if that isn’t the right information.DaviesKeymaster2016-04-27 at 17:30Post count: 151
Most failures with ECUs have to do with the switches needing to be cleaned.Johan VlagsmaParticipant2016-05-05 at 14:55Post count: 108
Hi, I’ve had a problem with a seat ECU on my ’90 Coupe. Probably due to water coming in from the sunroof onto the seats and leaking through, some of the traces on the printed circuit board had blown off. I fixed them and got it to work with the manual controls again but the memory function never did work again even after replacing the counter chip. I’ve given up fixing it for now and just bought one of the two ECU’s Lager mentions from ebay. Installing it will be a job for this summer. The ECU is a very basic, mostly analog circuit. It has no software, no processor etc. but it is steering the relais and thus essential also for the manual seat controls.LagerMember2016-08-10 at 12:45Post count: 114
Where are those ECU´s located? The memoryglide-function doesn´t work on my 1987 car. It should have that function because it is written on the owners manual.dn010Participant2016-08-10 at 14:28Post count: 105
There is a black plastic box bolted underneath the seat, on the bottom of the seat itself. It is fairly thin and rectangular. I believe this box is what houses the electronics for the seat.dn010Participant2016-08-10 at 16:28Post count: 105
I apologize for the large picture and dirty background – this is my spare power seat that has been sitting for years on end. I believe the box hanging down is the ECU you’re looking for.dn010Participant2016-08-10 at 16:30Post count: 105
I will add that it is much easier and faster to remove the seat in order to work underneath it, then it is to do anything with it installed.LagerMember2016-08-11 at 05:36Post count: 114
Thank you for your reply! So that ecu should be responsible for the “memoryglide-failing” ?dn010Participant2016-08-12 at 11:43Post count: 105
Are you having trouble with one or both of your seats? Unless you had flood damage, it would be strange that both seats do not work – both seats have their own plastic box. I believe this is the ECU however I am not 100% certain so perhaps it would be best to wait for others to chime in before you start throwing money at it.Johan VlagsmaParticipant2016-08-13 at 05:37Post count: 108
It is not an ECU, just a simple mostly analogue electronic circuit. Mine failed due to water damage and I repaired some of the tracks that blew off the circuit board. Never got it totally working correct though. I think there are 2 versions to these boxes, they are different for the phase 1 and 2 780’s. Just the phase 2 has the memory function I think.LagerMember2016-08-13 at 10:12Post count: 114
Both of my seats have non-working memory-glide function. I don´t know if 1987 is phase 1 or 2 but the owner´s manual says that it should have that function. I don´t know about the flood damage – I have only had this car for about one year.dn010Participant2016-08-24 at 09:18Post count: 105
It doesn’t have to be “flood” damage, even moisture in the carpet from a sunroof accidently left open during a rain storm can cause damage to the electrical components under the seat.LagerMember2016-12-04 at 01:11Post count: 114
Can someone confirm that the “ECU” is responsible if the seats don´t move backwards and back automatically when someone enters the rear seat?