Location of Brake Assist System (BAS) components (Mercedes-Benz S-Class W140)

Layout of the components of the emergency braking booster BAS
1 - Master brake cylinder; 2 - Vacuum pipe; A1e17 - ABS malfunction indicator lamp; A1e39 - Signal lamp EA; A1e47 - BAS/ESP malfunction indicator lamp; A1e48 - BAS/ASR malfunction indicator lamp; A1e49 - BAS/ETS fault indicator lamp; A7/7 - Vacuum booster; A7/7bl - BAS diaphragm displacement sensor; A7/7s1 - Brake Assist Switch BAS; A7/7u1 - BAS electromagnetic valve; N48 - Brake assist control unit BAS; Y61 - Master Cylinder Shift Valve

Article based on data from the website [www.MercedesMan.ru]

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The article has been verified: Polyakov Zakhar Grigorievich

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S-Class W140 / Brake system

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Location of ASR/ETS traction control system components
Brake system specifications
General information and safety precautions

Location of ESP system components
Disassembly and assembly of the main brake cylinder of the «Tandem» type (models 140.028/032/033/135)
Removal, installation and checking of the functioning of the brake booster servo drive
Removal and installation the brake caliper
Checking the thickness of the brake disc and brake pads

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