Remove/Install Side Pre-Safe (R) Pulse Airbag In Backrest, Replace If Necessary - AR91.60-P-0703FR
Model 257
with code 292 (PRE-SAFE® Impulse Side)
Model 290
with code 292 (PRE-SAFE® Impulse Side)
except code 555 (AMG-Performance Seat)
Shown on model 257 except code 432 (Left and right dynamic multicontour seat)
Fig 1: Side Pre-Safe (R) Pulse Airbag In Backrest Components Location - Model 290 With Code 292 Except Code 555 (Shown On Model 257)
Shown on model 257 except code 432 (Left and right dynamic multicontour seat)
Shown on model 257 except code 432 (Left and right dynamic multicontour seat)
| Risk of injury during testing and repair operations related to pyrotechnical components | Do not expose pyrotechnical component parts to temperatures above 100°C or 212°F. Disconnect current supply when working on such component parts. | AS91.00-Z-0008-01A | |
| Topical note | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Information, assessment and legal requirements when working with, handling and storing pyrotechnical components | AH91.00-Z-0000-10A | ||
| Remove/install | |||
| 1 | Remove seat backrest trim. | AR91.10-P-1912FR | |
| 2 | Disconnect ground line on battery. | AR54.10-P-0003FR | |
| 3 | Disconnect electrical connection (2). | ||
| 4 | Release catch hook (4). | ||
| 5 | Unhook gas generator (3) with bracket (6) from seat backrest shell (5) and guide out as shown. | ||
| 6 | Detach electrical connector (7). | Fig 2 | |
| 7 | Remove retaining ring (8). | Check retaining ring (8) is correctly seated. Otherwise, a malfunction of the PRE-SAFE® pulse side may occur. |
|
| 8 | Press ring (9) in direction of gas generator (3). | ||
| 9 | Pull pressure line (10) out of gas generator (3). | Ensure correct seating of pressure line (10). Otherwise, a malfunction of the PRE-SAFE® pulse side may occur. |
|
| 10 | Remove cover (1) with padding. | AR91.10-P-0003FR | |
| 11 | Remove front seat side airbag unit. | AR91.60-P-0695FR | |
| 12 | Remove screws (11) from backrest frame (12). | ||
| 13 | Unhook electrical wiring harness (18) from seat backrest shell (5). | ||
| 14 | Remove lumbar support pneumatic pump (M25/4, M25/5) from seat backrest shell (5) and place to one side with lines connected. | Model 257 with code 292 (PRE-SAFE® Impulse Side) except code 432 (Dynamic seats left and right) Model 290 with code 292 (PRE-SAFE® Impulse Side) except code 432 (Dynamic seats left and right) except code 555 (AMG-Performance Seat) |
|
| 15 | Unhook hooks (15) of spring frame (14) from brackets (16). | ||
| 16 | Unclip brackets (16) from backrest frame (12). | ||
| 17 | Unhook bracket (5.1) of seat backrest shell (5) from backrest frame (12) in direction of arrow using a suitable screwdriver (19). | ||
| 18 | Push seat backrest shell (5) downwards. | ||
| 19 | Push seat backrest shell (5) under spring frame (14), swing upwards in direction of arrow and remove. | The lumbar support (20) unhooks from the spring frame (14) as it swivels |
|
| 20 | Release catch hook (21). | ||
| 21 | Unhook airbag (17) from seat backrest shell (5). | ||
| 22 | Unhook pressure line (10) from seat backrest shell (5). | ||
| 23 | Remove airbag (17) with pressure line (10). | ||
| If there is damage: ↓ Replace airbag (17) with pressure line (10). |
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| 24 | Install in the reverse order | ||
| Check | |||
| 25 | Check Supplemental Restraint System (SRS) using vehicle diagnosis system. | ||
| AD00.00-P-2000-06FR |