(852-2134) Noise from the electrically adjustable front seat
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TECHNICAL SERVICE BULLETIN
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Bulletin Nbr:
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852-2134
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Date:
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oktober 1999
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Market:
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all
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Noise from the electrically adjustable front seat
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Saab 9-5 model year 1998 and 1999 up to and including VIN W3089124/X3098611.
Occasionally, different types of noises can emanate from the seats. The noises can be of varying types, squeaking, rattling and clicking. This is because different parts in the seat come into contact with each other in an undesirable way. The presence of undesirable noises is also due to temperature, air humidity and the weight of the person sitting in the seat.
It is therefore important to question the customer as regards the character of the noise, in which situation it occurs and if it comes from the backrest or the seat.
The diagnostic procedure below should be carried out after customer complaint. The cause of the seat noises has been rectified on a running basis in production, which is why each procedure has its own VIN definition that is noted for each measure respectively.
The procedure list is divided into two parts, backrest and seat respectively. Procedure 2 for the seat should always be carried out, even if no noise has been reported there. This procedure can also be carried out as a precautionary measure in connection with other work on the seat.
51 74 206 Felt tape, 2+1 pcs/seat (CA: 30584871)
79 71 872 Cable tie, 4 pcs/seat (CA: 30509026)
79 72 573 clip nut, 3 pcs/seat (CA: 30509070)
30 32 497 Lubricant (spray) (CA: 30585145)
30 32 364 Lubricant (Optimol) (CA: 30581810)
Establish if the noise comes from the backrest and/or seat. Decide with the aid of the test and interviewing the customer if the backrest and/or seat should be attended to.
Procedure step 2 under “Seat” is of precautionary nature and should
always
be performed as soon as any work is done on the seat. It can be performed with the seat still in the car.
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1.
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If noise occurs in the seat and/or backrest the entire seat should now be dismantled. Otherwise, step 2 should be performed with the seat still in the car.
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2.
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Seat upholstery comes undone on front edge.
Up to and including VIN X3099611
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2.a.
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Raise seat to its highest position in both the front and back edge.
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2.b.
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Undo the seat upholstery in the front edge of the seat pan.
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2.c.
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Fit the 3 clips with the flat side to the rear. It is important that the clips are secured properly. The two outer clips are fitted as far to each side as possible.
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2.d.
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Press the strip securely over the clip nuts.
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3.
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Chassis squeaking
VIN X3020269-X3086621
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3.b.
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Lubricate
all
moveable joints in the chassis, as illustrated, with lubricant part no. 30 32 497.
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3.c.
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Lubricate the seat rails with lubricant part no. 30 32 497.
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4.
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Creaking from the front upholstery hooks
From VIN W3089124/X3098611
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4.a.
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Remove the electronic unit and bracket and place them to one side.
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4.b.
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Remove the hooks from the pullmaflex mat.
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4.c.
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Divide the felt tape and apply the tape to the hooks.
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4.e.
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Fit the electronic unit.
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5.
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Snapping noise from the seat pan's front springs
Up to and including VIN W3089124/X3006695
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5.a.
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Dismantle one spring at a time.
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5.b.
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Drill out the lower holes in the reinforcement plate so that there is clearance for the ends of the spring.
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5.c.
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Assemble the spring before the next spring attachment is attended to.
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6.
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If the noise has been established from the backrest, continue with the procedures under the heading “Backrest”. Otherwise, fit and test the seat.
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Warning
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Torn backrest upholstery must
not
be repaired and refitted. The resistance of the upholstery is very carefully calculated as regards the side airbag and must not be changed.
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1.
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Dismantle the seat if it is not already done, see WIS.
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2.
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Undo the straps holding the bottom of the backrest upholstery.
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3.
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Unplug the cables under the seat and unclip the cable tie. Loosen the upholstery at the bottom.
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4.
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Extract the cables. Remove the board from the backrest upholstery.
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5.
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Loosen the back of the backrest upholstery by undoing the upholstery strip along the sides and folding up the upholstery.
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6.
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Creaking between the foam in the backrest and the backrest frame by the side airbag.
Up to and including VIN X3090475
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6.a.
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Apply the felt tape, part no. 51 74 206, on both the backrest frame bumps for the airbag.
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Note
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The tape should be applied as smoothly as possible without wrinkles.
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7.
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Creaking in the backrest pullmaflex mat and upholstery.
Up to and including VIN X3006484
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7.a.
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Cut away the foam around the upholstery hooks to obtain better access (applies to two hooks to the pullmaflex mat and three hooks to the upholstery).
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Note
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Use a very sharp knife.
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8.
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Creaking from the clamping ring for the lumbar support cable/lumbar support strip.
Up to and including VIN X3075889
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8.a.
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Remove the clamping ring.
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8.b.
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Fit a cable tie in the same way as the ring was fitted. Do not tighten the cable tie too hard.
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9.
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Clicking noise caused by the collision between the bottom of the SAHR strip and the centre string of the pullmaflex mat.
Up to and including VIN X3039379
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9.a.
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Cut the centre string. The end facing the SAHR strip should be 10 mm above the last net wire.
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10.
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Creaking between the SAHR frame and its plastic bushings.
Up to and including VIN X3006484
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10.a.
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Unhook the three upholstery hooks and fold up the rear upholstery.
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10.b.
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Apply lubricant, part no. 30 32 364, in the bushings while as the head restraint is moved back and forth.
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10.c.
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Fold down the rear upholstery and fit the upholstery hooks.
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11.
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Creaking between the SAHR strip and the tubular frame.
Up to and including VIN X3006484
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11.a.
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Apply grease, part no. 30 32 364, between the strip and the tube.
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11.b.
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Turn the strip back and forth so that the grease permeates well.
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12.
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Creaking in the pullmaflex mat in the backrest.
Up to and including VIN X3072343
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12.a.
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Apply lubricant, part no. 30 32 364, on the wire "ties" to the frame on the pullmaflex net.
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13.
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Put back the rear of the backrest upholstery by replacing the upholstery strip along the sides.
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14.
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Insert the board in the backrest upholstery.
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15.
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Lead the cables through the hole and replace the upholstery strip on the bottom edge. Connect the cables and fit the new cable tie.
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16.
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Fasten the straps on the bottom of the backrest upholstery under the seat cushion.
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17.
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Fit and try out the seat.
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Warranty/Time Information
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Failed Object: 40
Fault/reason code: 85210
Location code: 09 (US: 3, 4)
Warranty Type (US): 01
Repair/Action code: 10
Labour Operation (US): straight time (CA: 6732)
Time: 0.9h/seat
