C 230 (203.040) L4-1.8L SC (271.948) (2005)
caustic burns to eyes and skin from battery electrolyte or from handling lead-acid batteries
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No fire, sparks, naked flames or smoking.
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Wear acid-resistant gloves, clothing and eye protection. Pour battery electrolyte only into suitable and appropriately marked containers.
1
Disconnect ground cable of battery
CAUTION: Do not connect quiescent current retention device.
2
Remove evaporator housing
3
Detach coupling from air humidity sensor (B31/2)
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With Code (580a) automatic air conditioning
4
Detach coupling from actuator motor for fresh and recirculation doors (M2/5)
5
Detach coupling from activated charcoal filter flap adjustment motor (A32m2)
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With Code (581b) comfort automatic air conditioning
6
Expose cable
7
Remove clamping springs (4)
NOTE: Five clamping springs.
8
Remove blower housing (5) from evaporator housing
9
Unscrew bolts (13)
10
Remove damping springs (6)
NOTE: Ten clamping springs.
11
Unscrew bolts (1)
12
Fold evaporator (7) with cover (8) forwards
13
Remove clamping springs (6a)
NOTE: Slightly detach right blending air flap actuator motor (M217) with mechanism.
14
Remove cover (8)
15
Remove seal (11)
CAUTION: Check seal for signs of damage, replace if necessary.
16
Unscrew bolts (9)
CAUTION: Installation: tighten screws on alternate sides to avoid any tilting.
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Screw of expansion valve: 10 N.m
17
Detach expansion valve (10)
CAUTION: Seal openings using suitable plugs.
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See "Special Tools" given below.
CAUTION: Installation: Replace O-rings.
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Wet threads and O-ring using compressor oil.
18
Remove evaporator (7) from evaporator housing
19
Clean pan of air-distributor housing (12)
20
Install in the reverse order
21
Function check of air conditioning system
22
Read diagnostic trouble code memory and erase
23
Perform basic programming.
Special Tools