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Table of Contents > Anti-lock brake system > ABS Control unit and hydraulic unit

VW Tiguan Brake System ➜ ABS Control unit and hydraulic unit

Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
3
Control unit and hydraulic unit  
β‡’ o3.1 verview – control unit and hydraulic unit”, page 16  
β‡’ a3.2 nd installing ABS control unitJ104 and ABS hydraulic  
unitN55”, page 21  
β‡’ b3.3 rake lines to hydraulic unit”, page 36  
β‡’ c3.4 ontrol unit from hydraulic unit”, page 39  
β‡’ c3.5 ontrol unit to hydraulic unit”, page 40  
3.1  
Assembly overview – control unit and  
hydraulic unit  
β‡’ o3.1.1 verview – control unit and hydraulic unit, left-hand  
drive vehicles”, page 16  
β‡’ o3.1.2 verview – control unit and hydraulic unit, right-hand  
drive”, page 18  
3.1.1  
Assembly overview – control unit and hydraulic unit, left-hand drive vehi‐  
cles  
16  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
1 - ABS control unit -J104-  
and ABS hydraulic unit -N55-  
❑ Removing and instal‐  
ling β‡’ page 21  
2 - Brake line  
❑ To rear right brake cali‐  
per  
❑ Identification: 5.25 mm  
diameter and union  
screw with M10 Γ— 1  
thread  
❑ With standard tool:  
14 Nm  
❑ With special tools VAS  
6854, VAG 1410/7 and  
VAG 1410/6: 12 Nm  
3 - Brake line  
❑ To front left brake cali‐  
per  
❑ Identification: 5.25 mm  
diameter and union  
screw with M10 Γ— 1  
thread  
❑ With standard tool:  
14 Nm  
❑ With special tools VAS  
6854, VAG 1410/7 and  
VAG 1410/6: 12 Nm  
4 - Brake line  
❑ To front right brake cali‐  
per  
❑ Identification: 5.25 mm  
diameter and union  
screw with M10 Γ— 1  
thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
5 - Brake line  
❑ To rear left brake caliper  
❑ Identification: 5.25 mm diameter and union screw with M10 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
6 - Brake line  
❑ Leading to brake master cylinder/secondary piston circuit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
7 - Brake line  
❑ Leading to brake master cylinder/primary piston circuit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
8 - Brake servo and brake master cylinder  
3. Control unit and hydraulic unit  
17  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
❑ Assembly overview β‡’ page 96  
❑ Checking brake servo β‡’ Vehicle diagnostic tester  
❑ Removing and installing β‡’ page 100  
9 - Brake line  
❑ Brake master cylinder/primary piston circuit to hydraulic unit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
10 - Brake line  
❑ Brake master cylinder/secondary piston circuit to hydraulic unit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
11 - Heat insulation  
12 - Nut  
❑ 20 Nm  
13 - Bracket  
14 - Stud  
15 - Rubber damper  
16 - Bolt  
❑ 8 Nm  
17 - Bracket  
3.1.2  
Assembly overview – control unit and hydraulic unit, right-hand drive  
18  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
1 - ABS hydraulic unit -N55-  
with ABS control unit -J104-  
❑ Overview of fitting loca‐  
tions β‡’ page 10  
❑ Assembly overview β‡’  
page 18  
❑ Removing and instal‐  
ling β‡’ page 30  
❑ Separating ABS control  
unit -J104- from ABS  
hydraulic unit -N55- β‡’  
page 39  
❑ Attaching ABS control  
unit -J104- to ABS hy‐  
draulic unit -N55- β‡’  
page 40  
❑ Connecting brake line  
β‡’ page 38  
2 - Brake line  
❑ Brake master cylin‐  
der/secondary piston  
circuit to hydraulic unit  
❑ Identification: 6 mm  
diameter and union  
screw with M12 Γ— 1  
thread  
❑ Repairing brake lines β‡’  
page 122  
❑ 14 Nm  
3 - Brake line  
❑ Brake master cylin‐  
der/primary piston cir‐  
cuit to hydraulic unit  
❑ Identification: 6 mm  
diameter and union  
screw with M12 Γ— 1 thread  
❑ Repairing brake lines β‡’ page 122  
❑ 14 Nm  
4 - Brake line  
❑ To rear right brake caliper  
❑ Identification: 5.25 mm diameter and union screw with M10 Γ— 1 thread  
❑ Repairing brake lines β‡’ page 122  
❑ 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
5 - Brake line  
❑ To front left brake caliper  
❑ Identification: 5.25 mm diameter and union screw with M10 Γ— 1 thread  
❑ Repairing brake lines β‡’ page 122  
❑ 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
6 - Brake line  
❑ To front right brake caliper  
❑ Identification: 5.25 mm diameter and union screw with M10 Γ— 1 thread  
❑ Repairing brake lines β‡’ page 122  
3. Control unit and hydraulic unit  
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Brake system - Edition 10.2020  
❑ 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
7 - Brake line  
❑ To rear left brake caliper  
❑ Identification: 5.25 mm diameter and union screw with M10 Γ— 1 thread  
❑ Repairing brake lines β‡’ page 122  
❑ 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
8 - Bracket  
❑ Check for secure seating after installing.  
9 - Stud  
10 - Bracket  
11 - Nut  
❑ Qty. 2  
❑ 20 Nm  
12 - Rubber damper  
❑ Qty. 3  
13 - Bolt  
❑ Qty. 2  
❑ 8 Nm  
14 - Brake servo and brake master cylinder  
❑ Assembly overview β‡’ page 98  
❑ Checking brake servo β‡’ Vehicle diagnostic tester  
❑ Removing and installing β‡’ page 103  
❑ Removing and installing brake master cylinder β‡’ page 112  
15 - Brake line  
❑ Brake master cylinder/primary piston circuit to hydraulic unit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
16 - Brake line  
❑ Brake master cylinder/secondary piston circuit to hydraulic unit  
❑ Identification: 6 mm diameter and union screw with M12 Γ— 1 thread  
❑ With standard tool: 14 Nm  
❑ With special tools VAS 6854, VAG 1410/7 and VAG 1410/6: 12 Nm  
20  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
3.2  
Removing and installing ABS control  
unit -J104- and ABS hydraulic unit -  
N55-  
β‡’ a3.2.1 nd installing ABS control unitJ104/ABS hydraulic  
unitN55, LHD vehicles”, page 21  
β‡’ a3.2.2 nd installing control unit and hydraulic unit, right-hand  
drive vehicles”, page 30  
3.2.1  
Removing and installing ABS control  
unit -J104-/ABS hydraulic unit -N55-,  
LHD vehicles  
Special tools and workshop equipment required  
♦ Ring spanner insert AF 11 -V.A.G 1410/6-  
♦ Universal joint -V.A.G 1410/7-  
♦ Torque wrench -VAS 6854-  
3. Control unit and hydraulic unit  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
♦ Brake pedal depressor -V.A.G 1869/2-  
♦ Assembly tool -V.A.G 1410/8-  
♦ Engine support -T10533-  
Sealing plugs, assembly part no. 5Q0 698 311  
1 - Sealing plug M10  
2 - Sealing plug M12  
22  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
Removing  
Overview of fitting locations β‡’ Fig. β€œβ€œLocation of anti-lock brake  
system on left-hand drive vehicle:β€β€œ, page 10 :  
NOTICE  
Risk of damage to brake lines if bent.  
– Never excessively bend the brake lines in the area of the  
hydraulic unit.  
– If ABS control unit -J104- is renewed, use β‡’ Vehicle diag‐  
nostic tester.  
– Disconnect battery β‡’ Electrical system; Rep. gr. 27; Battery;  
Disconnecting and connecting battery.  
– Remove engine cover β‡’ Rep. gr. 10; Engine cover; Remov‐  
ing and installing engine cover.  
– Remove noise insulation β‡’ General body repairs, exterior;  
Rep. gr. 66; Noise insulation; Assembly overview - noise  
insulation.  
Vehicles with hybrid drive:  
– Remove catalytic converter β‡’ Rep. gr. 26; Emission control;  
Removing and installing catalytic converter.  
Vehicles with diesel engine:  
– Remove pressure differential sender -G505- and exhaust  
gas pressure sensor 1 -G450- from cylinder head cover  
β‡’ Rep. gr. 23; Senders and sensors; Removing and instal‐  
ling pressure differential sender -G505-.  
– If fitted, detach exhaust gas pressure sensor 1 -G450- from  
cylinder head cover β‡’ Rep. gr. 23; Senders and sensors;  
Removing and installing exhaust gas pressure sensor 1 -  
G450-.  
– Remove exhaust gas temperature sender 3 -G495- β‡’ Rep.  
gr. 26; Removing and installing exhaust gas temperature  
sender 3 G495.  
– Remove injector for reducing agent -N474- on exhaust gas  
cleaning module and place on right with lines still attached  
β‡’ Rep. gr. 26; SCR system (Selective Catalytic Reduction);  
Removing and installing injector for reducing agent.  
– Release and pull off connector -1- for oil level and oil tem‐  
perature sender -G266-.  
3. Control unit and hydraulic unit  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
– If fitted, release and pull off connector -2- on auxiliary pump  
for heating -V488-.  
– Remove front exhaust pipe on emission control module  
β‡’ Rep. gr. 26; Exhaust pipes/silencers; Removing and in‐  
stalling front exhaust pipe.  
– Remove pendulum support β‡’ Rep. gr. 10; Assembly mount‐  
ings; Removing and installing pendulum support.  
Vehicle with diesel engine and four-wheel drive  
– Unbolt propshaft from bevel box at front β‡’ Propshaft and  
rear final drive; Rep. gr. 39; Propshaft; Assembly overview -  
propshaft, and lay it to one side.  
Vehicles with bi-turbo diesel engine  
– Unbolt fuel filter, and place it on engine with fuel lines con‐  
nected β‡’ Rep. gr. 20; Fuel filter; Removing and installing  
fuel filter.  
– Release and pull off connector -2- on coolant expansion  
tank.  
– Unclip, release and pull off connector -4-.  
– Unclip retainer for fuel lines on coolant expansion tank  
-arrow-.  
– Using a screwdriver, release catches -6-.  
– Place coolant expansion tank -1- on engine.  
24  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
Continued for all vehicles with diesel engine:  
– Fit engine support -T10533- as shown in illustration and  
tighten bolts by hand.  
♦ Bolt -3- = original pendulum support bolt  
♦ Screw an M8 Γ— 30 mm bolt -1- with a washer -2- into threa‐  
ded hole of noise insulation.  
♦ -A- thin end  
♦ -B- thick end  
NOTICE  
For all-wheel drive vehicles, fit a longer bolt into the pendulum  
support to serve as a spacer between the gearbox and the  
engine support.  
Use the front hole in the aluminium section to do so.  
– To start the second bolt, push the engine forwards slightly by  
hand.  
– Push engine with engine support -T10533- forwards.  
Continued for all vehicles:  
– On vehicles with heat shield, remove heat shield -1-.  
3. Control unit and hydraulic unit  
25  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
– Press down retainer catch -arrow A-.  
– Release electrical connector -arrow B-.  
– Pull off electrical connector -1-.  
– Apply brake pedal depressor -V.A.G 1869/2-.  
– Connect hose of bleeder bottle -1- to bleeder valve of front  
left brake caliper.  
– Open bleeder valve.  
– Connect hose of bleeder bottle -1- to bleeder valve of rear  
left brake caliper.  
26  
Rep. gr.45 - Anti-lock brake system  
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Brake system - Edition 10.2020  
– Open bleeder valve.  
– Depress brake pedal at least 60 mm using brake pedal de‐  
pressor -V.A.G 1869/2-.  
– Close front left and rear left bleeder valve.  
– Do not remove brake pedal depressor -V.A.G 1869/2-.  
NOTICE  
Ensure no brake fluid gets onto contacts.  
– Pull cover off bulkhead and unclip brake lines.  
– First, mark both brake lines from brake master cylinder, and  
unscrew them from hydraulic unit.  
– Seal threaded holes immediately using sealing plugs from  
the assembly kit, part no. 5Q0 698 311.  
– Mark, unscrew and seal threaded holes of remaining brake  
lines (brake calipers).  
– Pull hydraulic unit together with control unit upwards out of  
dampers -arrow-.  
– Unbolt bracket from hydraulic unit -arrows- in vehicle.  
3. Control unit and hydraulic unit  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
– Remove hydraulic unit.  
Installing  
Install in reverse order of removal, observing the following:  
NOTICE  
Remove sealing plugs from new hydraulic unit only when the  
corresponding brake line is going to be fitted.  
If the sealing plugs are removed from the hydraulic unit, brake  
fluid can escape, and it can then no longer be guaranteed that  
the unit is sufficiently filled and bled.  
Ensure that rubber dampers of retainer are not pressed out of  
bracket when installing. After installation, check hydraulic unit  
for firm seating to avoid malfunctions.  
– Before installing bracket of ABS hydraulic unit -N55- into  
bracket, spray rubber dampers with silicone lubricant -D 007  
000 A2-.  
– Using assembly tool -V.A.G 1410/8-, carefully fit brake lines.  
28  
Rep. gr.45 - Anti-lock brake system  
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Brake system - Edition 10.2020  
Tightening sequence of brake lines:  
– Remove brake pedal actuator -V.A.G 1869/2-.  
– Bleed brake system β‡’ page 126 .  
– If ABS control unit -J104- was renewed, use β‡’ Vehicle diag‐  
nostic tester.  
Torque settings  
Assembling special tools for tightening brake lines  
♦ β‡’ o3.1.1 verview – control unit and hydraulic unit, left-hand  
drive vehicles”, page 16  
♦ β‡’ Rep. gr. 26; Emission control system; Assembly overview  
- emission control system  
♦ β‡’ Rep. gr. 26; Exhaust pipes/silencers; Assembly overview -  
front exhaust pipe  
♦ β‡’ Rep. gr. 26; Exhaust gas temperature control; Assembly  
overview - exhaust gas temperature control  
♦ β‡’ Rep. gr. 10; Assembly mountings; Assembly overview -  
assembly mountings  
♦ β‡’ Rep. gr. 20; Fuel filter; Assembly overview - fuel filter  
♦ β‡’ Rep. gr. 26; SCR system (Selective Catalytic Reduction);  
Assembly overview - injector for reducing agent  
♦ β‡’ Electrical system; Rep. gr. 27; Battery; Assembly overview  
- battery  
♦ β‡’ General body repairs, exterior; Rep. gr. 66; Noise insula‐  
tion; Assembly overview - noise insulation.  
♦ β‡’ Propshaft and rear final drive; Rep. gr. 39; Propshaft;  
Assembly overview - propshaft  
♦ Front bleeder valves β‡’ o1.1 verview – front brake caliper”,  
page 86  
3. Control unit and hydraulic unit  
29  
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Brake system - Edition 10.2020  
♦ Rear bleeder valves β‡’ o2.1 verview – rear brake caliper”,  
page 91  
3.2.2  
Removing and installing control unit  
and hydraulic unit, right-hand drive ve‐  
hicles  
Special tools and workshop equipment required  
♦ Ring spanner insert AF 11 -V.A.G 1410/6-  
♦ Universal joint -V.A.G 1410/7-  
♦ Torque wrench -VAS 6854-  
30  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
♦ Brake pedal depressor -V.A.G 1869/2-  
♦ Assembly tool -V.A.G 1410/8-  
♦ Engine support -T10533-  
Sealing plugs, assembly part no. 5Q0 698 311  
1 - Sealing plug M10  
2 - Sealing plug M12  
3. Control unit and hydraulic unit  
31  
theMANUALS.org  
Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
Overview of fitting locations β‡’ Fig. β€œβ€œLocation of anti-lock brake  
system on right-hand drive vehicle:β€β€œ, page 10 :  
Removing  
NOTICE  
Risk of damage to brake lines if bent.  
– Never excessively bend the brake lines in the area of the  
hydraulic unit.  
– If ABS control unit -J104- was renewed, perform function  
0003 - Renew control unit (commissioning). Use  
β‡’ Vehicle diagnostic tester for this.  
Vehicles with 12 V battery in engine compartment  
– Remove battery β‡’ Electrical system; Rep. gr. 27; Battery;  
Removing and installing battery.  
– Remove battery tray β‡’ Electrical system; Rep. gr. 27; Bat‐  
tery tray; Removing and installing battery tray.  
Vehicles with 12 V battery in luggage compartment  
– Remove air filter carrier β‡’ Rep. gr. 24; Air filter; Removing  
and installing air filter housing.  
Vehicles with hybrid drive:  
– Observe safety precautions when working on the high-volt‐  
age system β‡’ page 1 .  
– Observe the risk category of the high-voltage system β‡’ Rep.  
gr. 00; Risk category of the high-voltage system.  
DANGER  
Danger to life due to high voltage.  
Severe or fatal injury from electric shock.  
– The high-voltage system must be de-energised by a suita‐  
bly qualified technician.  
– De-energise high-voltage system now β‡’ Electric drive; Rep.  
gr. 93; De-energising high-voltage system.  
– Disconnect battery β‡’ Electrical system; Rep. gr. 27; Battery;  
Disconnecting and connecting battery.  
Continued for all vehicles:  
– Press down retainer catch -arrow A-.  
– Release electrical connector -arrow B-.  
– Pull off electrical connector -1-.  
32  
Rep. gr.45 - Anti-lock brake system  
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Tiguan 2021 ➀, Tiguan RUS 2021 ➀  
Brake system - Edition 10.2020  
– Apply brake pedal depressor -V.A.G 1869/2-.  
– Connect hose of bleeder bottle -1- to bleeder valve of front  
left brake caliper.  
– Open bleeder valve.  
– Connect hose of bleeder bottle -1- to bleeder valve of rear  
left brake caliper.  
– Open bleeder valve.  
– Depress brake pedal at least 60 mm using brake pedal de‐  
pressor -V.A.G 1869/2-.  
– Close front left and rear left bleeder valve.  
– Do not remove brake pedal depressor -V.A.G 1869/2-.  
– Place sufficiently lint-free cloths under ABS control unit -  
J104- and ABS hydraulic unit -N55-.  
NOTICE  
Make sure no brake fluid gets onto electrical contacts on ABS  
control unit -J104-.  
3. Control unit and hydraulic unit  
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