十一月份賓士技術通報-引擎故障燈亮起

冷車有時啟動時間增長，或是無故引擎故障燈會亮起，引擎電腦進入緊急模式，性能受限，且引擎控制單元存儲有以上故障代碼：

賓士原廠技術通報-W204/C300

- No power flow from automatic transmission 722.9 after replacing the hydraulic controller unit -

Topic number	GI27.35-P-020442
Version	2
Design group	27.35 Valve body
Date	03-21-2007
Validity	All models with automatic transmission 722.9
Reason for change	Complaint and validity revised

Complaint

After replacing the hydraulic controller unit on automatic transmission 722.9 (7G-TRONIC), no gear can be engaged in transmission mode "S" and there is no power flow from the transmission. In transmission mode "C" the vehicle starts off as usual (vehicles with gasoline engines only).

Cause

When installing the new hydraulic unit, the supply pipe for multidisk brake B3 was not installed correctly.

File	Designation
Versorgungsrohr.jpg	Supply pipe for multidisk brake B3

Remedy

Remove hydraulic controller unit as described in AR 27.19-P-0200w.

Before reinstalling, install supply pipe as described in AR 27.19-P-0200w, step 6. See also the pictures in the annex.

File	Designation
Versorgungsrohr montieren1.jpg	Insert supply pipe into transmission housing before installing the hydraulic unit.
Versorgungsrohr montieren2.jpg	Insert supply pipe into transmission housing before installing the hydraulic unit.

WIS references

Document number	Title	Note	Allocation
AR27.19-P-0200w	WIS reference		Remedy

Symptoms

Symptom

Power transmission / Power transmission, function / No power flow

Power transmission / Automatic transmission / Automatic transmission - function / General

Power transmission / Automatic transmission / Automatic transmission - function / Engaging process

Power transmission / Automatic transmission / Automatic transmission - function / No power flow

Parts

Part number	ES1	ES2	Designation	Quantity	Note	EPC	Non-EPC
A2202770047			Oil guide pipe	1	Only order if the old supply pipe was damaged	X

賓士原廠技術通報-W204/C300

- Harsh engagement when changing gear range from P to D -

Topic number	GI27.50-P-044018
Version	3
Design group	27.50 Gear assembly
Date	03-11-2010
Validity	Transmission 722.9 up to sequence number 1.842.410
Reason for change	Additional possible remedy

Complaint

When changing gear range from P to D, harsh engagement may be noticeable.

Cause

Friction coefficient fluctuations possible in the B2 disk packs in vehicles with transmission sequence numbers smaller than 1.842.410.

Remedy

Applies only for transmissions with sequence number less than 1.842.410: Replacement of B2 disks. Order parts as per EPC.

Otherwise the engagement sequences for N-D and N-R must be taught in again as follows:

Note: Always remain in the gear ranges N/R/D for at least 5 sec!

Start the engine from cold,

shift 5 times N-R,

shift 5 times N-D --> warm up transmission to 40°C and while doing so, exceed a speed of 50 km/h at least once.

shift 5 times N-R,

shift 5 times N-D --> warm up transmission to 70°C and while doing so, exceed a speed of 50 km/h at least once.

shift 5 times N-R,

shift 5 times N-D.

Symptoms

Symptom

Power transmission / Power transmission, function / Jolting/shuddering during start-off

Power transmission / Automatic transmission / Automatic transmission - function / General

Power transmission / Automatic transmission / Automatic transmission - function / Shuddering during start-off

Power transmission / Automatic transmission / Automatic transmission - function / Shudders

Power transmission / Automatic transmission / Automatic transmission - function / Poor shift quality

賓士原廠技術通報-W204/C300

- Hard 1-2 shift or hard torque converter lockup clutch engagement -

Topic number	GI27.00-P-044014
Version	2
Design group	27.00 General
Date	03-11-2010
Validity	Transmission 722.9
Reason for change	Remedy revised

Complaint

The customer complaint "Hard shift, presumable the 1-2 shift, occurs when moving off" is often received even though the problem is hard engagement of the torque converter lockup clutch (KÜB) in the start-off procedure.

In order to permit a clear diagnosis, restrict the 1st gear before moving off.

If a jolt occurs at the point where the state of the torque converter lockup clutch changes from "open" to "slipping", then the cause should be sought in the control of the torque converter lockup clutch.

Cause

Control of torque converter lockup clutch engagement not ideal.

Remedy

1. Via DAS menu item "Initial startup", perform transmission software update and then perform SCN coding.
   
2. Via DAS menu item "KÜB adaptation", adapt the torque converter lockup clutch according to the coolant temperature and torque window.
   
3. Then perform a test drive.

If the complaint is still present, first work through the diagnosis tree for transmission 722.9 (GI27.00-P-035661) and, if the complaint persists, please contact Technical Product Support and attach a current quick test report and the control unit log to the TIPS case.

Symptoms

Symptom

Power transmission / Power transmission, function / Jolting/shuddering during start-off

Power transmission / Automatic transmission / Automatic transmission - function / General

Power transmission / Automatic transmission / Automatic transmission - function / Shifts

Power transmission / Automatic transmission / Automatic transmission - function / Poor shift quality

Operation numbers/damage codes

Op. no.	Time	Damage code	Note
Operation text
		5455390

賓士原廠技術通報-W204/C300

- 2-3 upshift slips once -

Topic number	GI27.00-P-046507
Version	6
Design group	27.00 General
Date	08-25-2010
Validity	Transmission 722.9 with engines 273, 272 and 642
Reason for change	Remedy revised; software for OM642 and M272 will only be available for electrohydraulic controller unit 23 06 and 24 06.

Complaint

After a cold start, slippage may occur in the 2-3 shift when the vehicle moves off for the first time.

Cause

A full basic charge for the K1 piston cannot be guaranteed with a cold start. This means that the plate contact pressure must still be built up, which can lead to a single brief slip of the gearshift.

Remedy

Topic is known. A software improvement is being produced. Replacing hardware does not remedy the problem.

Software for vehicles with M273 in combination with electrohydraulic controller unit A220 270 23 06 and A220 270 24 06 published with DVD 01/2010

Do not perform any repairs for vehicles with OM642 and M272 until further optimization software is available. Software is being produced for vehicles with electrohydraulic controller unit A220 270 23 06 and A220 270 24 06.

Symptoms

Symptom

Power transmission / Power transmission, function / Jolting/shuddering during start-off

Power transmission / Automatic transmission / Automatic transmission - function / General

Power transmission / Automatic transmission / Automatic transmission - function / No power flow

Power transmission / Automatic transmission / Automatic transmission - function / Shifts

Power transmission / Automatic transmission / Automatic transmission - function / Shuddering during start-off

Power transmission / Automatic transmission / Automatic transmission - function / Slips

Power transmission / Automatic transmission / Automatic transmission - function / Shifting is not performed or is delayed

Power transmission / Automatic transmission / Automatic transmission - function / Poor shift quality

Operation numbers/damage codes

Op. no.	Time	Damage code	Note
Operation text
		2701363	2-3 upshift

BENZ 原廠技術通報 W204 C300

Grinding noises from area of front axle - wheel bearing defective -

Topic number	GI33.20-P-046670
Version	6
Design group	33.20 Wheel location, wheel hub
Date	12-02-2011
Validity	Model 204 except 4MATIC; except 204.9## (GLK), 207
Reason for change	Linked operation items added!

Complaint

Grinding noises from area of front axle - wheel bearing defective

Cause

Corrosion spreading under wheel hub sealing ring. Dirt and water are washed in front of the sealing ring of the wheel hub via the rpm sensor bore in the steering knuckle or through corresponding gaps between the anchor plate and steering knuckle. Corrosion forms on the contact surface of the sealing ring and spreads under the sealing lips. As a result, moisture can penetrate the wheel bearing and cause corrosion.

Remedy

Please note the revised procedure for repair in the case of wheel bearing damage on the front axle!

The most important new feature of the repair method is the use of a repair hub (Figure A) with inserted stainless steel race (1).

The stainless steel race (1) is pressed onto the corroded steering knuckle (Figure D) during assembly of the wheel hub and guarantees the new seal with the wheel hub sealing ring. This means that it is no longer necessary to replace the steering knuckle!

Axle alignment is not necessary with this repair method!

In order to avoid follow-up repairs, always replace both wheel bearings on the front axle in problem vehicles!

First-time installation of a repair wheel hub:

1.) Detach wheel hub, bearing and brake cover plate.

2.) Use a wire brush to remove loose corrosion from the contact surface of the wheel hub sealing ring (Figure C).

3.) Clean steering knuckle spindle thoroughly.

4.) Install new brake cover plate (Figure E) with optimized sponge rubber (picture 2).

5.) Push on repair hub (Figure A) without tilting it and pull as far as the stop with the clamp nut (Figures G,H,I)

6.) Adjust wheel bearing play (Figure J).

7.) Install sponge rubber ring (Figure F) on rpm sensor.

8.) Reassemble the vehicle.

Important note for subsequent reinstallation of a repair wheel hub:

When the repair hub with stainless steel race is installed, the stainless steel race is positively pressed onto the steering knuckle (Figure D).  

If the wheel hub is subsequently removed/reinstalled, there is a risk of damaging the sealing lip of the wheel hub sealing ring when pushing on.

For this case there is a repair kit (Figure B), consisting of a wheel hub sealing ring with preinstalled stainless steel race.

This repair kit must be pulled into the wheel hub which is to be reinstalled.

To do this, use the regular tool W203 589 0243 00, but with a different method.

As the stainless steel race reduces the inside diameter of the hub sealing ring, the tool die (Figures M, N, picture 4) must be turned through 180° so that the hub sealing ring contacts the rear face of the tool die (the side not lined with rubber).

1.) Insert wheel hub sealing ring with stainless steel race into wheel hub by hand. This centers the hub and makes it easier to pull in with the tool.

2.) Pull in wheel hub sealing ring with stainless steel race using rear face of tool die of special tool W203 589 0243 00.

3.) Remove old stainless steel race from steering knuckle (as shown in Figures K, L).

4.) Push on wheel hub without tilting it and pull as far as the stop with the clamp nut.

6.) Adjust wheel bearing play.

7.) Reassemble the vehicle.

Note:This new repair method will soon (expected as of Week 19/2010) also be available in SDmedia

File	Designation
Anhang.pdf	Attachment

WIS references

Document number	Title	Note	Allocation
AR33.20-P-0310cw	Remove/install front wheel hub		Remedy
AR42.30-P-0712cw	Remove/install left or right front rpm sensor		Remedy
AR33.20-P-0310-03SX	Install radial sealing ring in front wheel hub		Remedy

Symptoms

Symptom

Chassis/suspension / Chassis, noises / Humming/droning/throbbing

Chassis/suspension / Chassis, noises / Howling

Chassis/suspension / Axles / Front axle / Front axle, noise / Squeaking

Parts

Part number	ES1	ES2	Designation	Quantity	Note	EPC	Non-EPC
A2044202544			Brake cover plate, left	1	Improved rigidity to prevent cracking	X
A2044202644			Brake cover plate, right	1	Improved rigidity to prevent cracking	X
A2043350080			Sponge rubber ring for rpm sensor	2	Sponge rubber rings are available with and without white adhesive foil. If the adhesive foil is present, it must be installed on the cable side (Figure E6).	X
A0029890051			Wheel bearing grease	1	Order with quantity index 10! A 002 989 00 51 10	X
A2204230071			Bolt, brake cover plate	6		X
A2043300625			Repair wheel hub	2		X
A2043300060			Repair kit, wheel hub sealing ring with stainless steel race	1	As required	X

Operation numbers/damage codes

Op. no.	Time	Damage code	Note
Operation text
33-2380		3322436
REMOVE/INSTALL FRONT WHEEL HUB (BOTH), REPLACE SEALING RING(S) (WHEEL(S) REMOVED)
42-3600		3322436
REPLACE WHEEL BRAKE SHIELD ON BOTH SIDES OF 1ST AXLE (WHEEL BEARING REMOVED)
40-1590		3322436
REMOVE/INSTALL WHEELS (2)
42-9889		3322436
REPLACE SEALING RING OF RPM SENSOR (BOTH) OF FIRST AXLE FOR ELECTRONIC STABILITY PROGRAM (ESP)