Remove/install knock sensors - AR15.12-P-2184R
ENGINES 275 in MODELS 215, 216, 220, 221, 230
Illustrated on model 230.476
| Remove/install | |||
| 1 | Turn key in electronic ignition switch control unit to position "0" | ||
| 2 | Remove lower engine compartment paneling | Model 215, 220 | AR61.20-P-1105M |
| Model 216, Model 221 without code (Z07) Top protection |
AR61.20-P-1105SX | ||
| Model 221 with code (Z07) Top protection | AR61.20-P-1105SXS | ||
| Model 230 except special model "AMG Black Series" | AR61.20-P-1105R | ||
| Model 230 with code (P99) Special model "AMG Black Series" | AR61.20-P-1105RBS | ||
| Left front knock sensor | |||
| 3 | Disconnect electrical connector for front knock sensor (left side of engine) (A29/1) | ||
| 4 | Remove bolt (2) and remove front knock sensor (left side of engine) (A29/1) | *BA15.10-P-1001-02B | |
| Left rear knock sensor | |||
| 5 | Remove complete exhaust system | Model 230 | AR49.10-P-7000RB |
| 6 | Remove heat shield (22) | Model 230 | |
| 7 | Remove bolts (1a) and take out heat shield (1). | Model 230 | |
| *BA15.10-P-1002-02B | |||
| 8 | Disconnect electrical connector for rear knock sensor (left side of engine) (A29/2) | ||
| 9 | Remove bolt (2) and remove rear knock sensor (left side of engine) (A29/2) | *BA15.10-P-1001-02B | |
| Right front knock sensor | |||
| 10 | Remove right engine support | Model 215, 220 | AR22.10-P-4320IX |
| Model 216, 221 | AR22.10-P-1260SZ | ||
| Model 230 | AR22.10-P-1260R | ||
| 11 | Disconnect electrical connector for front knock sensor (right side of engine) (A30/1) | ||
| 12 | Remove bolt (2) and remove front knock sensor (left side of engine) (A30/1) | *BA15.10-P-1001-02B | |
| Right rear knock sensor | |||
| Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices | No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards. Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground. Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers. |
AS54.10-Z-0001-01A | |
| 13 | Disconnect ground line(s) at battery(ies) | Model 215, 220 | AR54.10-P-0003I |
| Model 216, 221 | AR54.10-P-0003SX | ||
| Model 230 without code (P99) "AMG Black Series" | AR54.10-P-0003R | ||
| Model 230 with code (P99) Special model "AMG Black Series" | AR54.10-P-0003RBS | ||
| 14.1 | Remove complete exhaust system | Model 230 | AR49.10-P-7000RB |
| 14.2 | Remove right catalytic converter | Model 215, 220 | AR49.10-P-5500M |
| 14.3 | Remove heat shield from starter | Model 216, 221 | |
| See Remove/install starter. | AR15.30-P-7100SZ | ||
| 15 | Disconnect electrical connector for rear knock sensor (right side of engine) (A30/2) | ||
| 16 | Remove bolt (2) and remove rear knock sensor (right side of engine) (A30/2) | *BA15.10-P-1001-02B | |
| 17 | Install in the reverse order | ||
| 18 | Read out fault memory and erase if necessary | ||
| Connect STAR DIAGNOSIS and read out fault memory | AD00.00-P-2000-04A |
KNOCK SENSORS
| Number | Designation | Engine 275, 285 | |
|---|---|---|---|
| BA15.10-P-1001-02B | Bolt, knock sensor to crankcase | Nm | 20 |
| BA15.10-P-1002-02B | Bolt connecting heat shield of knock sensor to crankcase | Nm | 8 |