What are the steps involved in the removal, overhaul, and refitting of the lower Control Arm on Mercedes-Benz 190E?

New lower pivot bolt nuts, new shock absorber lower mounting bolt nut(s), and an anti-roll bar connecting link bolt nut will be required on refitting. Begin by chocking the front wheels, applying the parking brake, jacking up the rear of the vehicle, and supporting it on axle stands before removing the appropriate roadwheel. Undo the retaining screws or clips to remove the protective cover from the base of the lower arm. Fit a spring compressor to the coil spring and compress it to relieve tension from its upper and lower seats. Slacken and remove the nut and bolt securing the anti-roll bar connecting link to the lower arm, then position a jack beneath the lower arm and raise it until it supports the weight. Slacken and remove the shock absorber lower mounting bolt nut(s) and withdraw the bolt(s) and washers. Unscrew the nut from the lower arm outer pivot bolt and withdraw the bolt, carefully lowering the arm slightly to withdraw the coil spring and spring seat. Unscrew the nut, withdraw the inner pivot bolt and washers, and remove the lower arm from underneath the vehicle. Thoroughly clean the lower arm and the area around the arm mountings, checking for cracks, distortion, or signs of wear, particularly in the mounting bushes. If either bush requires renewal, take the lower arm to a Mercedes-Benz dealer or suitably equipped garage for pressing out and installing new ones. Offer up the lower arm, insert the inner pivot bolt and washers, and fit the new nut, tightening it lightly. Ensure the lower arm spring seat is clean, fit the upper spring seat to the coil spring, and manoeuvre the spring into position, locating the lower end correctly against the stop on the lower arm seat. Align the upper spring seat with the body mounting and carefully raise the lower arm while aligning it with the hub carrier, anti-roll bar link, and shock absorber. Check that the coil spring is correctly located, then insert the lower arm outer pivot bolt and fit the new retaining nut, tightening it lightly. Align the lower end of the shock absorber with the arm and insert the mounting bolt(s), fitting a new nut(s) and tightening it lightly. Insert the anti-roll bar connecting link bolt, fit the new retaining nut, and tighten lightly. Refit the rear roadwheel, lower the vehicle to the ground, and tighten the wheel bolts to the specified torque. With the vehicle resting on its wheels, rock it to settle all disturbed components in position, then tighten the lower arm pivot bolts, shock absorber lower mounting bolts(s), and the anti-roll bar connecting link bolt to their specified torque settings, finally refitting the protective cover to the lower arm and securely tightening its retaining screws.

How to remove and install the lower control arm on Mercedes-Benz C230?

This is only for the 4MATIC (AWD) models and any fasteners and the corresponding hardware connecting the lower control arm with the subframe has to be removed and replaced to maintain the correct front wheel alignment. The first and second step would be to loosen the wheel bolts so that the front of the car is lifted up and placed on jackstands to ensure it is supported by the frame of the vehicle rather than any part of the suspension. Then take the engine splash shield out underneath the car. When the bi-xenon headlamps are fitted with range adjustors, remove the sensor connection to the lower control-arm on one side, only. Indicate front and rear fitting attachments on the arm, and release tie-rod end when seated in steering knuckle. Repeat this procedure by disconnecting the lower control arm balljoint to the steering knuckle; tools to separate balljoints are available in most auto parts stores. Check lower control arm-to-subframe pivot bolts Check grooves by looking at the ends of each mounting bolt where the threads will be visible; note the existence or absence of a grooved mounting bolt which can be used to adjust the vehicle wheel position. When loosening the nut, be sure to hold the lower control arm-to-subframe mounting bolt but be careful avoid turning the control arm mounting bolts and doing so will prevent removal of the small lugs in the center of the arm bushing. Clean out the nut and take the bolt out in a manner that does not disturb the bolts position in the lugged part of the bushing and associated washers. When the bolt does not have any grooves, it is housed between the lugs in the middle of the bushing. We work sidewards with the side tie-rod to the extreme opposite end when undoing the rear pivot bolt, in order to lift it out. Lastly, once the lower control arm is in place, take it in the subframe bracket and slide it in the direction. To install, follow the instructions in reverse order, with a new ball joint stud nut and making sure that all driver screws are tightened to the recommended torque rates with new self-locking nuts wherever possible. Use a floor jack to raise the lower control arm while simulating normal ride height and then use a floor jack to tighten the lower control arm mounting nuts at the sub frame. Fit the wheel and drop vehicle then fasten the wheel bolts to required torque and, where desirable, test and refocus the front wheel end.

Genuine Mercedes-Benz Control Arm

Suspension Arm

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386 Control Arms found

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Mercedes-Benz Upper Control Arm
Part Number: 210-350-16-06-05
$45.00 MSRP: $63.00
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Product Specifications
- Position: Upper
- Replaced by: 210-350-34-06
Fits the following Mercedes-Benz Models:
- SL600 | 1995-1998 | Base | 12 Cyl 6.0 L GAS
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Mercedes-Benz Front Lateral Link
Part Number: 210-350-34-06
$45.00 MSRP: $63.00
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Product Specifications
- Other Name: Control Arm
Fits the following Mercedes-Benz Models:
- C220 | 1994-1996 | Base | 4 Cyl 2.2 L GAS
- C230 | 2002-2007, 1997-2000 | Base, Kompressor, Sport | 4 Cyl 1.8 L GAS, 4 Cyl 2.3 L GAS, 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
- C240 | 2001-2005 | 4Matic, Base | 6 Cyl 2.6 L GAS
- C280 | 2006-2007, 1994-2000 | 4Matic, Base, Luxury | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- C32 AMG | 2002-2004 | Base | 6 Cyl 3.2 L GAS
- C320 | 2001-2005 | 4Matic, Base | 6 Cyl 3.2 L FLEX, 6 Cyl 3.2 L GAS
- C350 | 2006-2007 | 4Matic, Luxury, Sport | 6 Cyl 3.5 L GAS
- C55 AMG | 2005-2006 | Base | 8 Cyl 5.5 L GAS
- CLK320 | 1998-2005 | Base | 6 Cyl 3.2 L GAS
- CLK350 | 2006-2009 | Base | 6 Cyl 3.5 L GAS
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Mercedes-Benz Upper Control Arm
Part Number: 177-350-39-00-64
$66.00 MSRP: $92.00
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Product Specifications
- Other Name: Camber Strut; Upper Control Arm
- Replaces: 177-350-39-00
Fits the following Mercedes-Benz Models:
- A35 AMG | 2020-2021 | 4Matic | 4 Cyl 2.0 L GAS
- CLA35 AMG | 2020-2023 | 4Matic | 4 Cyl 2.0 L GAS
- CLA45 AMG | 2020-2023 | 4Matic | 4 Cyl 2.0 L GAS
- GLA35 AMG | 2021-2023 | 4Matic | 4 Cyl 2.0 L GAS
- GLA45 AMG | 2021-2023 | 4Matic | 4 Cyl 2.0 L GAS
- GLB35 AMG | 2021-2023 | 4Matic | 4 Cyl 2.0 L GAS
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Mercedes-Benz Rear Lower Control Arm
Part Number: 232-350-29-03
$52.80 MSRP: $74.00
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Product Specifications
- Other Name: Thrust Arm; Rear Lower Control Arm, Trailing Arm
Fits the following Mercedes-Benz Models:
- SL55 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
- SL63 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
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Mercedes-Benz Upper Control Arm
Part Number: 176-350-07-00
$61.20 MSRP: $85.00
You Save: $23.80 (28%)
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Product Specifications
- Other Name: Camber Arm
- Position: Upper
Fits the following Mercedes-Benz Models:
- CLA45 AMG | 2014-2019 | 4Matic | 4 Cyl 2.0 L GAS
- GLA45 AMG | 2015-2019 | 4Matic | 4 Cyl 2.0 L GAS
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Mercedes-Benz Upper Control Arm
Part Number: 246-350-10-06
$64.80 MSRP: $90.00
You Save: $25.20 (28%)
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Product Specifications
- Other Name: Camber Arm
- Position: Upper
Fits the following Mercedes-Benz Models:
- B Electric Drive | 2015 | Base | BATTERY EV (EV/BEV)
- B250e | 2016-2017 | Base | BATTERY EV (EV/BEV)
- CLA250 | 2014-2019 | 4Matic, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- GLA250 | 2015-2020 | 4Matic, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- GLA45 AMG | 2015-2019 | 4Matic | 4 Cyl 2.0 L GAS
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Mercedes-Benz Upper Control Arm
Part Number: 204-330-81-11
$158.40 MSRP: $220.00
You Save: $61.60 (28%)
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Product Specifications
- Position: Upper
- Replaced by: 204-330-83-11
Fits the following Mercedes-Benz Models:
- GLK250 | 2013-2015 | Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- GLK350 | 2010-2015 | 4Matic, Base | 6 Cyl 3.5 L GAS
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Mercedes-Benz Upper Link
Part Number: 140-350-36-06
$68.40 MSRP: $95.00
You Save: $26.60 (28%)
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Product Specifications
- Other Name: Control Arm; Rear Arm, Strut Rod, Upper Link
Fits the following Mercedes-Benz Models:
- 300SD | 1992-1993 | Base | 6 Cyl 3.4 L DIESEL
- 300SE | 1992-1993 | Base | 6 Cyl 3.2 L GAS
- 400SE | 1992 | Base | 8 Cyl 4.2 L GAS
- 400SEL | 1993 | Base | 8 Cyl 4.2 L GAS
- 500SEC | 1993 | Base | 8 Cyl 5.0 L GAS
- 500SEL | 1992-1993 | Base | 8 Cyl 5.0 L GAS
- 600SEC | 1993 | Base | 12 Cyl 6.0 L GAS
- 600SEL | 1992-1993 | Base | 12 Cyl 6.0 L GAS
- CL500 | 1998-1999 | Base | 8 Cyl 5.0 L GAS
- CL600 | 1998-1999 | Base | 12 Cyl 6.0 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 204-350-36-06
$129.60 MSRP: $180.00
You Save: $50.40 (28%)
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Product Specifications
- Other Name: Spring Link; Lower Control Arm
Fits the following Mercedes-Benz Models:
- GLK250 | 2013-2015 | Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- GLK350 | 2012-2015 | 4Matic, Base | 6 Cyl 3.5 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 177-352-17-00
$78.00 MSRP: $109.00
You Save: $31.00 (29%)
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Product Specifications
- Other Name: Spring Link; Lower Control Arm
- Replaces: 246-352-02-02
Fits the following Mercedes-Benz Models:
- A220 | 2019-2022 | 4Matic, Base | 4 Cyl 2.0 L GAS
- CLA250 | 2014-2023 | 4Matic, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- CLA45 AMG | 2014-2019 | 4Matic | 4 Cyl 2.0 L GAS
- GLA250 | 2015-2020 | 4Matic, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- GLA45 AMG | 2015-2019 | 4Matic | 4 Cyl 2.0 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 247-352-37-00
$91.20 MSRP: $127.00
You Save: $35.80 (29%)
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Product Specifications
- Other Name: Spring Link; Lower Control Arm
- Replaces: 246-352-00-02
Fits the following Mercedes-Benz Models:
- A35 AMG | 2020-2021 | 4Matic | 4 Cyl 2.0 L GAS
- B Electric Drive | 2015 | Base | BATTERY EV (EV/BEV)
- B250e | 2016-2017 | Base | BATTERY EV (EV/BEV)
- CLA35 AMG | 2020-2023 | 4Matic | 4 Cyl 2.0 L GAS
- EQB 250 | 2023 | Base | BATTERY EV (EV/BEV)
- GLA250 | 2015-2023 | 4Matic, Base | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- GLB250 | 2020-2023 | 4Matic, Base | 4 Cyl 2.0 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 203-350-00-06
$76.80 MSRP: $107.00
You Save: $30.20 (29%)
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Product Specifications
- Other Name: Transverse Control Arm; Lower Control Arm
Fits the following Mercedes-Benz Models:
- C230 | 2005-2007 | Kompressor, Sport | 4 Cyl 1.8 L GAS, 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
- C240 | 2005 | 4Matic, Base | 6 Cyl 2.6 L GAS
- C280 | 2006-2007 | 4Matic, Luxury | 6 Cyl 3.0 L GAS
- C320 | 2005 | 4Matic, Base | 6 Cyl 3.2 L FLEX, 6 Cyl 3.2 L GAS
- C350 | 2006-2007 | 4Matic, Luxury, Sport | 6 Cyl 3.5 L GAS
- CLK320 | 2005 | Base | 6 Cyl 3.2 L GAS
- CLK350 | 2006-2009 | Base | 6 Cyl 3.5 L GAS
- CLK500 | 2005-2006 | Base | 8 Cyl 5.0 L GAS
- CLK55 AMG | 2005-2006 | Base | 8 Cyl 5.5 L GAS
- CLK550 | 2007-2009 | Base | 8 Cyl 5.5 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 202-350-02-06
$75.60 MSRP: $105.00
You Save: $29.40 (28%)
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Product Specifications
- Other Name: Control Arm
- Position: Lower
- Replaces: 202-350-00-06
Fits the following Mercedes-Benz Models:
- 300CE | 1988-1993 | Base | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- 300D | 1990-1993 | 2.5 | 5 Cyl 2.5 L DIESEL
- 300E | 1990-1993 | 2.6, 2.8, 4Matic, Base | 6 Cyl 2.6 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- 300SL | 1990-1993 | Base | 6 Cyl 3.0 L GAS
- 400E | 1992-1993 | Base | 8 Cyl 4.2 L GAS
- 500E | 1992-1993 | Base | 8 Cyl 5.0 L GAS
- 500SL | 1990-1993 | Base | 8 Cyl 5.0 L GAS
- 600SL | 1993 | Base | 12 Cyl 6.0 L GAS
- C220 | 1994-1996 | Base | 4 Cyl 2.2 L GAS
- C230 | 2002-2007, 1997-2000 | Base, Kompressor, Sport | 4 Cyl 1.8 L GAS, 4 Cyl 2.3 L GAS, 6 Cyl 2.5 L FLEX, 6 Cyl 2.5 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 223-352-35-00
$78.00 MSRP: $109.00
You Save: $31.00 (29%)
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Product Specifications
- Other Name: Spring Link; Lower Control Arm
Fits the following Mercedes-Benz Models:
- S500 | 2021-2023 | 4Matic | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- S580 | 2021-2023 | 4Matic | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- S580e | 2023 | 4Matic | 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Mercedes-Benz Lower Control Arm
Part Number: 124-350-53-06
$80.40 MSRP: $112.00
You Save: $31.60 (29%)
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Product Specifications
- Other Name: Control Arm; Lower Control Arm
Fits the following Mercedes-Benz Models:
- 300TD | 1987 | Base | 6 Cyl 3.0 L DIESEL
- 300TE | 1988-1993 | 4Matic, Base | 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- E320 | 1998-2003, 1994-1995 | 4Matic, Base | 6 Cyl 3.2 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 204-350-35-06
$79.20 MSRP: $110.00
You Save: $30.80 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Spring Control Arm
- Position: Lower
- Replaces: 204-350-20-06
Fits the following Mercedes-Benz Models:
- C250 | 2012-2015 | Base, Luxury, Sport | 4 Cyl 1.8 L GAS
- C300 | 2008-2014 | 4Matic, 4Matic Luxury, 4Matic Sport, Luxury, Sport | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- C350 | 2008-2015 | 4Matic, Base, Sport | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- C63 AMG | 2008-2015 | Base, Black Series | 8 Cyl 6.3 L GAS
- CLS400 | 2015-2017 | 4Matic, Base | 6 Cyl 3.0 L GAS
- CLS550 | 2012-2018 | 4Matic, Base | 8 Cyl 4.7 L GAS
- CLS63 AMG | 2012-2014 | 4Matic, Base | 8 Cyl 5.5 L GAS
- CLS63 AMG S | 2014-2018 | 4Matic | 8 Cyl 5.5 L GAS
- E250 | 2014-2016 | Bluetec, Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
- E350 | 2010-2016 | 4Matic, Base, Bluetec | 6 Cyl 3.0 L DIESEL, 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
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Mercedes-Benz Lower Control Arm
Part Number: 247-352-64-00
$84.00 MSRP: $117.00
You Save: $33.00 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Spring Link; Lower Control Arm
Fits the following Mercedes-Benz Models:
- CLA45 AMG | 2020-2023 | 4Matic | 4 Cyl 2.0 L GAS
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Mercedes-Benz Rear Upper Control Arm
Part Number: 232-350-11-00
$88.80 MSRP: $124.00
You Save: $35.20 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Camber Strut; Rear Arm, Rear Upper Control Arm
Fits the following Mercedes-Benz Models:
- SL55 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
- SL63 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
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Mercedes-Benz Front Lower Control Arm
Part Number: 232-350-34-03
$104.40 MSRP: $145.00
You Save: $40.60 (28%)
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Product Specifications
- Other Name: Spring Link; Front Lower Control Arm, Lower Link
- Replaces: 232-350-56-01
Fits the following Mercedes-Benz Models:
- SL55 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
- SL63 AMG | 2022-2023 | 4Matic | 8 Cyl 4.0 L GAS
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Mercedes-Benz Rear Lower Control Arm
Part Number: 205-350-66-03
$87.60 MSRP: $122.00
You Save: $34.40 (29%)
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Product Specifications
- Other Name: Tie Rod
- Replaces: 204-350-06-53
Fits the following Mercedes-Benz Models:
- C250 | 2012-2015 | Base, Luxury, Sport | 4 Cyl 1.8 L GAS
- C300 | 2008-2023 | 4Matic, 4Matic Luxury, 4Matic Sport, Base, Luxury, Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- C350 | 2008-2015 | 4Matic, Base, Sport | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
- C350e | 2016-2018 | Base | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- C400 | 2015 | 4Matic | 6 Cyl 3.0 L GAS
- C63 AMG | 2008-2011 | Base | 8 Cyl 6.3 L GAS
- CLS400 | 2015-2017 | 4Matic, Base | 6 Cyl 3.0 L GAS
- CLS450 | 2019-2023 | 4Matic, Base | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- CLS550 | 2012-2018 | 4Matic, Base | 8 Cyl 4.7 L GAS
- E250 | 2014-2016 | Bluetec, Bluetec 4Matic | 4 Cyl 2.1 L DIESEL
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Mercedes-Benz Control Arm

Every part of the automobile matters, and their maintenance is crucial for the health of your vehicle. Moreover, a faulted Mercedes-Benz Control Arm can impact its functionality as well as lead to system-wide problems that may endanger safety. Thus, it is imperative that one repairs or replaces failing parts for better driving experiences. Why go for OEM Mercedes-Benz Control Arms? Because they are the optimal solutions, fit your vehicle perfectly, and are easy to install. Therefore, these factors help maintain the dependability and performance of your vehicle. At MBPartsGiant.com, you may find all the required genuine parts for your Mercedes-Benz. They are delivered from authorized Mercedes-Benz dealers directly via an uncomplicated online catalog. We guarantee promptness, reliability, and cheap sales on the Mercedes-Benz Control Arm, and we always provide you with the right part at any time. Depend on our genuine Mercedes-Benz Control Arms to keep your vehicle running smoothly.

Mercedes-Benz Control Arm Parts and Q&A

Lower Control Arm
124-330-19-07
Q: What are the steps involved in the removal, overhaul, and refitting of the lower Control Arm on Mercedes-Benz 190E?
A:
New lower pivot bolt nuts, new shock absorber lower mounting bolt nut(s), and an anti-roll bar connecting link bolt nut will be required on refitting. Begin by chocking the front wheels, applying the parking brake, jacking up the rear of the vehicle, and supporting it on axle stands before removing the appropriate roadwheel. Undo the retaining screws or clips to remove the protective cover from the base of the lower arm. Fit a spring compressor to the coil spring and compress it to relieve tension from its upper and lower seats. Slacken and remove the nut and bolt securing the anti-roll bar connecting link to the lower arm, then position a jack beneath the lower arm and raise it until it supports the weight. Slacken and remove the shock absorber lower mounting bolt nut(s) and withdraw the bolt(s) and washers. Unscrew the nut from the lower arm outer pivot bolt and withdraw the bolt, carefully lowering the arm slightly to withdraw the coil spring and spring seat. Unscrew the nut, withdraw the inner pivot bolt and washers, and remove the lower arm from underneath the vehicle. Thoroughly clean the lower arm and the area around the arm mountings, checking for cracks, distortion, or signs of wear, particularly in the mounting bushes. If either bush requires renewal, take the lower arm to a Mercedes-Benz dealer or suitably equipped garage for pressing out and installing new ones. Offer up the lower arm, insert the inner pivot bolt and washers, and fit the new nut, tightening it lightly. Ensure the lower arm spring seat is clean, fit the upper spring seat to the coil spring, and manoeuvre the spring into position, locating the lower end correctly against the stop on the lower arm seat. Align the upper spring seat with the body mounting and carefully raise the lower arm while aligning it with the hub carrier, anti-roll bar link, and shock absorber. Check that the coil spring is correctly located, then insert the lower arm outer pivot bolt and fit the new retaining nut, tightening it lightly. Align the lower end of the shock absorber with the arm and insert the mounting bolt(s), fitting a new nut(s) and tightening it lightly. Insert the anti-roll bar connecting link bolt, fit the new retaining nut, and tighten lightly. Refit the rear roadwheel, lower the vehicle to the ground, and tighten the wheel bolts to the specified torque. With the vehicle resting on its wheels, rock it to settle all disturbed components in position, then tighten the lower arm pivot bolts, shock absorber lower mounting bolts(s), and the anti-roll bar connecting link bolt to their specified torque settings, finally refitting the protective cover to the lower arm and securely tightening its retaining screws.
Lower Control Arm
202-350-02-06
Q: How to remove and install the lower control arm on Mercedes-Benz C230?
A:
This is only for the 4MATIC (AWD) models and any fasteners and the corresponding hardware connecting the lower control arm with the subframe has to be removed and replaced to maintain the correct front wheel alignment. The first and second step would be to loosen the wheel bolts so that the front of the car is lifted up and placed on jackstands to ensure it is supported by the frame of the vehicle rather than any part of the suspension. Then take the engine splash shield out underneath the car. When the bi-xenon headlamps are fitted with range adjustors, remove the sensor connection to the lower control-arm on one side, only. Indicate front and rear fitting attachments on the arm, and release tie-rod end when seated in steering knuckle. Repeat this procedure by disconnecting the lower control arm balljoint to the steering knuckle; tools to separate balljoints are available in most auto parts stores. Check lower control arm-to-subframe pivot bolts Check grooves by looking at the ends of each mounting bolt where the threads will be visible; note the existence or absence of a grooved mounting bolt which can be used to adjust the vehicle wheel position. When loosening the nut, be sure to hold the lower control arm-to-subframe mounting bolt but be careful avoid turning the control arm mounting bolts and doing so will prevent removal of the small lugs in the center of the arm bushing. Clean out the nut and take the bolt out in a manner that does not disturb the bolts position in the lugged part of the bushing and associated washers. When the bolt does not have any grooves, it is housed between the lugs in the middle of the bushing. We work sidewards with the side tie-rod to the extreme opposite end when undoing the rear pivot bolt, in order to lift it out. Lastly, once the lower control arm is in place, take it in the subframe bracket and slide it in the direction. To install, follow the instructions in reverse order, with a new ball joint stud nut and making sure that all driver screws are tightened to the recommended torque rates with new self-locking nuts wherever possible. Use a floor jack to raise the lower control arm while simulating normal ride height and then use a floor jack to tighten the lower control arm mounting nuts at the sub frame. Fit the wheel and drop vehicle then fasten the wheel bolts to required torque and, where desirable, test and refocus the front wheel end.

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