2005 Audi A4 / S4 / RS4 Audi A4 / S4 / RS4 2005

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2005 Audi A4 / S4 / RS4 repairs by problem area

Engine (49%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (2%)

Suspension and Steering (12%)

Electrical and Air Conditioning (20%)

Paint, Rust, Leaks, Rattles, and Trim (5%)

Other (5%)

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Chart based on 482 repairs.
See TSBs and recalls for the 2005 Audi A4 / S4 / RS4.

2005 Audi A4 / S4 / RS4 electrical repair cost distribution

$2500+ (5%)

$1000 - $2499 (13%)

$500 - $999 (14%)

$100 - $499 (26%)

< $100 (43%)

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Chart based on 80 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2005 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

40000 mi Passenger Window Regulator New Window Lock Switch New Front Upper Control Arms New Glove Box Door 
45000 mi

US $300
A/C Compressor malfunction. Was operating intermittantly, repaired under CPO 
75700 mi Window washer fluid began leaking. Determined leak was from faulty pump. Pump replaced. 
82000 mi

US $110
Replaced weak battery 

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2005 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

88000 mi

US $100
the driver window regulator (window stopped rolling up) 
95000 mi seat heaters did not work 
102500 mi

US $300
Replace starter (intermittent failing). 
65000 mi

US $1600
Front passenger head light would fail after 1 to 2 hours. This is a failure mode of a bad Xenon headlight. 
83000 mi Recharged the AC but still doesn't blow very cold. Probably needs more work. 
92000 mi

US $1100
Hatch latch does not open when sun is shining on the hatch. replace servo, didn't fix second replacement replaces another switch 
101000 mi

US $220
Every year I need to get my AC recharged. The shop has looked for the leak for the last 4 years and has never found, so I will go in to the shop in late spring and get a recharge. 
67000 mi A/C blows hot air all of a sudden. Shop checked system, plenty of R134 in system. Shop not sure what the problem is, need to bring car back for further diagnostic work. 
68000 mi

US $200
A/C was still not working properly. Took to dealer as previous mechanic at non-Audi shop felt there was something wrong with the system (and not just low on R134a). Dealer could find no issues other than low R134a level. 
81000 mi

US $250
Airbag light on, replaced one of the passenger side airbags. 

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2005 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

76000 mi Replace compressor. replace compressor 
84000 mi Driver seat heater failed. New heater grid replaced under warranty 
76000 mi

US $45
Front passenger window regulator failed. Cabling found broken and frayed during replacement. 
45300 mi

US $1000
Air Bag Light on-Replaced Air Bag Sensor, Leaking Sealant/Coolant Gasket, Replaced Tailight bulb, Performed 45,000 maintenance sErvice with brake flush. 
57000 mi

US $300
Passenger front window regulator not working 

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2005 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

31500 mi Car needs a new AC compressor A/C condenser replaced 
32000 mi

US $50
Driver seat heater not working. Seat heating element was replaced 
39300 mi

US $100
Window regulator was broken. Covered under Audi Pure Protection Gold Warranty 
93000 mi

US $350
Driverside window glass would not rise up. 
97000 mi Door window switches, locks, sensors on driver's not working 
33214 mi driver's switch for a rear window stopped working. switch replaced under warranty. 
35159 mi headlamp assemblies fogged up. replaced under warranty. 
90700 mi dealer tried the cam-position sensors and the clutch sensor. turned out to be the starter 
98000 mi

US $2200
reverse lights not working, replaced reverse light switch at the 6MT transmission. 
105000 mi

US $140
Front Driver side window regulator went out. I was able to get a replacement part online and performed the repair myself. 
110000 mi

US $2000
AC clutch seized. 
44000 mi

US $440
Headlight sensor was bad. Replaced rearview mirror. 
60140 mi

C $1000
AC failed, requires new compressor $1400 item, plus costs of a dryer. http://audiwarranty.blogspot.com Car brought to a private repair shop for service, replaced a part of the AC unit, but problem persists, car needs a new AC compressor 
63240 mi New A/C compressor. 
63540 mi

C $900
Starter failure, car would not start for a long time when cold, replaced clutch switch, checked battery, then replaced starter problem solved. 
65300 mi

C $800
HVAC pressure switch failure and system leak 

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2005 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

44000 mi passenger window does not operate with all windows switch. 
104000 mi

US $300
Battery replace along with oil change. Other items needed fixed but the dealer was asking for my first born and she wasn't willing so I found a great independent shop. 
106000 mi

US $3900
Fan replaced 
106000 mi

US $400
Car wouldn't start. After a while it would start and run for a while, then it would just shut down. Some type of small electrical part that malfunctioned. 

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2005 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed manual AWD

63300 mi

US $700
alternator belt & tensioner 
102000 mi

US $5200
A/C compressor, HVAC hoses,  
48360 mi Starter motor not working properly. Memory switch for recalling position of driver's seat had to be replaced. 

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2005 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

65000 mi Side impact airbag fault tripped the dashboard "air bag" light 
98000 mi Compressor failure; needed replacement 
29000 mi

US $75
replace defective daylight running light bulb 

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2005 Audi A4 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

41000 mi Drivers window regulator failed. 
53800 mi

US $50
Driver's window regulator failed..again. 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

75000 mi

US $1935
Windshield wiper pump replaced. 
98000 mi

US $1100
Windshield washer pump failed. Replaced. Button on window master control unit. Replaced unit. Recharged AC. 
84000 mi A/C not blowing cold when idling when sold. 
84000 mi Antenna booster stopped working and no radio signal. They replaced the booster. 
110000 mi

US $975
leaky O rings; replaced O rings and added coolant A/C flap behind glove box opened intermittently; as a result A/C sometimes was fine, other times was only available on right side of car with outside temperature air blowing in on the left side. Flap replaced. 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed manual AWD

78000 mi HVAC issues, getting no heat from the car. Got it fixed at the dealer at no cost. Something regarding a locked vent not moving to control airflow; all fixed and have heat. 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

117000 mi

US $200
AC compressor bearing was making a lot of noise. Had to replace AC compressor and new belt 
151000 mi

US $300
replaced battery a month prior and new battery was not charging properly. Thought could be alternator. 
161000 mi

US $2000
a/c compressor failed. replaced entire a/c compressor and serpentine belt 
53000 mi

US $3
Right rear tail light. 
59000 mi

US $17
Head light repair 
63000 mi

US $330
Drivers side window regulator failure and needed to be replaced. 
76000 mi

US $330
Passenger side window regulator failure and needed to be replaced. 
117000 mi

US $400
Driver and Passenger Window regulators for the second time each. 
Mileage unknown/Warranty Replace cup holder and front window motor 
43276 mi Replace air conditioner compressor , reinitialized window memory 
51300 mi Certified used car warranty Replace driver's door motor, replace sunroof potentiometer, replace fuel pump 
42000 mi Drivers window grinding and not functioning. Cable came out of regulator. Left front electric window regulator removed and reinstalled. 
46000 mi

US $50
Airbag light was on. Drivers side igniter upper limit exceeded. Drivers seat wiring harness for airbag repaired. 
53300 mi

US $53
Air bag light came on for second time in a year. First time was wiring under driver seat. This time was wiring under passenger seat. 
65000 mi

US $675
Passenger door window regulator broken 
166000 mi My starter went out when I pulled into a Rest Area, car would not re-start had it towed to a local shop and they replaced it for 250 bucks, much cheaper than the Audi dealership, they do GREAT WORK for half the cost 
179000 mi

US $300
Car died on highway, got AAA to tow me, alternator was not charging the battery, battery. Changed alternator and battery. Car is back on road. 

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2005 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

112220 mi

C $839
Front Passenger Window Regulator replaced 
115940 mi

C $387
Battery 5yrs old 
109000 mi

US $900
Defective headlamp sensor detector failure lamp intermittently lights up on lateral acceleration 

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2005 Audi A4 2dr Convertible

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

89000 mi Continuation of intermittent electrical problem plaguing car since March. Ran fault codes, found ect sensor @ 48c degrees, replaced, Installed new sensor in water neck flange at radiator, problem in instrument cluster, no repair attempted. AC head control unit had internal short circuit, shorting out the comfort system. Instrument cluster was having catastrophic communication problems. Faulty AC control head unit and instrument cluster were replaced and re-coded. "Econ" button was stuck on...no heat, no air-cond. just outside air coming through the vent. system. New instrument cluster needed to be re-programmed. 
89000 mi Also, crimped wires from the trunk lid wiring harness are giving false brake light out warning lights....The Audi wiring harness is roughly $4200 for the part alone, so it will either be spliced to fix, or I will learn to live with it if I keep the car. 
89000 mi Crimped wires from the trunk lid wiring harness. 

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2005 Audi A4 2dr Convertible

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

37740 mi Brake light bulb and tail light bulb inoperable, removed and replaced. 
47977 mi Right side brake light open circuit, remained lit. Removed and replaced bulb. Driver side wiper not touching glass, spring broken, replaced. Actuator for locking gas door broken, replaced. Glove box popped open at high speeds, hinge fixed. 
96000 mi

US $4000
Ac compressor replaced 

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2005 Audi A4 / S4 / RS4

Engine not specified

87000 mi

US $550
Starter replacement. Symptom: turning key to start, but no start, no sounds, no nothing. 
78000 mi

US $500
window motor failed. 

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2005 Audi A4 / S4 / RS4 4-door

4-cylinder automatic 2WD

53940 mi

$500
electrical window motor on front left side u/s 

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See TrueDelta's information for all Audi models.

2005 Audi A4 / S4 / RS4 Electrical Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2005 Audi A4 / S4 / RS4 problems occur, check out our car reliability stats.