Q7 Passenger seat backrest problem

zipzz

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Hi all,

I have a 2016 Q7 4M. My 10yr old son was playing in the passenger seat recently and he did something which has now restricted the front passenger seat from reclining backward beyond a certain point. The switch clicks as if its reached end of range. I have checked for any physical blockages but there are none visible. I have not dismantled the seat. All other seat movement is normal - full front and back, up and down, and lumbar controls.

A VCDS scan shows no error codes as per below.

Address 06: Seat Mem. Pass (J521) Labels:* None
Part No SW: 4M0 959 760 E HW: 4M0 959 760 E
Component: MEM-BFS 008 0015
Serial number: 00000185548851
Coding: 00183B000001B2410000210101010000110000313100000000000000000000
Shop #: WSC 31414 790 00001
ASAM Dataset: EV_SCMPasseSideCONTIAU736 006007
ROD: EV_SCMPasseSideCONTIAU736.rod
VCID: 3A2D3151BCD7811BC1B-806E

No fault code found.

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I am wondering if there is a software reset of total incline range possible, and how I could go about this. There are options in the VCDS module to
1. Resetting all adaptation values
2. Rest seat: Calibration
3. Seat : Band end calibration

I dont want to test these till I understand what these actually do.

Appreciate any help.

Thanks in advance,

Zip
 

Uwe

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1. Resetting all adaptation values
2. Rest seat: Calibration
3. Seat : Band end calibration

I dont want to test these till I understand what these actually do.
I would strongly advise against 1. or 3.

What happens if you run the backrest adjustment all the way up/forward first. When it reaches the end of travel, hold the switch in the up/forward position for 1-2 seconds, release then hold it in the up/forward position again for 1-2 seconds. Then try running it down/back.

When your son was playing with it, was there something that might have restricted the backrest's motion? The way these normally work is they monitor the current drawn by the motor. That current increases dramatically when the something restricts motion, and using the hold and release thing above will teach the module the end-stop. I'm thinking he might have managed to teach it a new end stop that isn't real.

-Uwe-
 
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