2006 Audi A4 / S4 / RS4 Audi A4 / S4 / RS4 2006

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2006 Audi A4 / S4 / RS4 repairs by problem area

Engine (55%)

Transmission and Drivetrain (5%)

Brakes and Traction Control (2%)

Suspension and Steering (9%)

Electrical and Air Conditioning (21%)

Paint, Rust, Leaks, Rattles, and Trim (4%)

Other (4%)

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Chart based on 910 repairs.
See TSBs and recalls for the 2006 Audi A4 / S4 / RS4.

2006 Audi A4 / S4 / RS4 electrical repair cost distribution

$2500+ (1%)

$1000 - $2499 (7%)

$500 - $999 (8%)

$100 - $499 (37%)

< $100 (47%)

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Chart based on 100 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2006 Audi S4 4dr Wagon

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

46796 mi

US $175
front turn signal wasn't working. Had socket and bulb replaced. 
47000 mi

US $175
front turn signal was out. Bulb and socket replaced. 
105000 mi two driving lights were burned out, took over ten minutes window lock broke 
18000 mi Also, noted problem with door lock button, shop says "could not duplicate," no action taken. 
69000 mi

US $190
Driver door window regulator failed, could not close window. Dealership said it would take all day to fix, bought part and did it myself. 

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2006 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

97200 mi Low tone horn wire disconnected, reconnected at no charge 

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2006 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

85700 mi

US $155
Low on freon. Dealer added dye will be back in August to check for leaks. 
94800 mi

US $440
Replaced passenger window regulator 
105000 mi

US $85
HID headlights go bad far too often. Replace right dipping light. Most of the work is getting the airbox out of the way. 
83000 mi

US $100
Drivers side Driving Light Bulb harness was shorting out due to wear on the wiring sheath. 
54000 mi

US $160
CD Changer failed. Had to be replaced. 
75000 mi

US $125
This model has a history of headlight flickering and headlight outages. Sometimes headlight bulb replacement fixes it, sometimes the ballast or other electrical parts need to be replaced. In this case, replacing the bulbs fixed it for now. 

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2006 Audi S4 2dr Convertible

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

56000 mi

US $100
Starter intermittently stopped working. Replaced under copo warranty with $100 deducatable 
93000 mi

US $265
Ground strap was coming apart from starter and starter had to be replaced 

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2006 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed manual AWD

80000 mi

US $2000
replace radio and gps system 
89000 mi

US $950
cruise control not working 

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2006 Audi A4 4dr Wagon

turbocharged 200hp 2.0L I4 6-speed shiftable automatic AWD

99200 mi

C $390
Replaced passenger side XENON HID BULB of type D1S. Bought for $99.99 @ Canadian Tire. Because low-beam was burnt out. Original said "Philips". Replacement came in a Sylvania box, but lamp is OSRAM. Is so identical to Philips that I'm sure that both came out of the same factory. The window regulator was shot, as indicated by "crunchy sounds" when operating the power window. rnThe regulator for the Audi includes the entire window frame, mechanism, stainless-steel cables, and plastic pulleys. rnThe parts are pricey (CAD$341 from Audi -- there are no cheap Chinese knock-offs) but labour is very low, because its all one, pre-assembled unit. rnKelly and team at Sun Creek did it for around $400 plus tax. rnAt an Audi dealership it would have been double that price. 
60300 mi

US $85
Dealer broke my Headlight Range Control Module after finishing work on my broken engine mounts. 
60000 mi

US $120
Wiring harness for turn signal needed to be replaced 
64000 mi

US $85
noise from HVAC system, replaced vent flapper motor, covered by a TSB 
75000 mi

US $85
A/C does not adequately cool vehicle.  Navigation / Head unit Cd player inoperative, replaced entire unit. Xenon headlamps flicker randomly, shut off occasionally.  
77000 mi

US $85
Headlight failure not fixed - problem is found on ALL internet forums as well as NHTSA website, but dealer claimed, for the fourth time, they could not duplicate. 
77000 mi Sold with headlight problem not resolved. 

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2006 Audi A4 4dr Wagon

turbocharged 200hp 2.0L I4 6-speed manual AWD

81220 mi Rear right tail light assembly - shorted wiring causing lights to not work 
69000 mi

US $180
Short in audio head unit drained battery. Dealer diagnosed bad MMI unit (radio/navigation) and gave 3,400 estimate to replace. I declined and asked them to disconnect unit. Went to independent car stereo store for replacement. 
124620 mi

C $90
Replaced HID Bulb and 2 small lamp sockets 
168920 mi

C $389
Passenger Window Regulator 
176600 mi

C $50
Bad License Plate lamp assembly 
40000 mi Headlight was flickering and going out. Dealership replaced bulb because of TSB. 
97000 mi found and repaired 2 broken electrical connectors in the engine bay. AC has been repaired. 
121700 mi Heating element burned through the leather seat on driver's side. Report performed by dealer for Audi. Heated seat now disconnected. 
140700 mi left rear turn signal usually doesn't work. Wiring issue identified. Will cost approximately $700 to fix. 
144000 mi Electrical issues with heated seat and turn signal never fixed. 

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2006 Audi A4 4dr Wagon

255-horsepower 3.1L V6 6-speed shiftable automatic AWD

42000 mi Headlight has intermittent failure (adaptive HID lights). Occasionally turns itself off, but relights when I turn lights off and on again. Audi shop proposed to replace unrelated part so I declined repair. 
56000 mi

US $240
Replaced HID headlamp due to intermittent malfunction. Problem with ignitor, which is integral with bulb for this design.  
64000 mi

US $500
xenon headlight bulb exchange due to intermittent failure (prob. related to voltage regulating component integral with bulb). 
136000 mi

US $2000
recharge 
41000 mi Passenger light ballast(?) replaced 

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2006 Audi A4 4dr Wagon

255-horsepower 3.1L V6 6-speed manual AWD

108500 mi Rear window wiper was not functional due to water leaking into bearing. The wiper motor assembly was removed and modified so oil could be injected into bushing/shaft assembly. The motor was operated until it ran smoothly. 
137020 mi

C $400
Defective ballast on the HID light required replacement. To remove the head light assembly, the bumper cover must be removed.  

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2006 Audi A4 4dr Sedan

turbocharged 200hp 2.0L I4 7-speed shiftable CVT FWD

80 mi Replace defective A/C condensor 
22000 mi XM Radio quit working. Replace XM Radio module. 
23000 mi XM Radio Module replaced 
58000 mi

US $1200
Replaced battery 
86300 mi

US $25
Drivers side master switch cluster malfunction. Causing child window lock to be engaged all the time. Replaced with chinese knockoff for $10. Broke several retainer clips when removing door card. Replaced with several knockoff clips. 
44640 mi Drivers side front speaker replaced. Left front speaker was replaced under warranty 
60000 mi fuel level sensor not reading correct fuel level 
52000 mi

US $800
Control arm cracked. 

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2006 Audi A4 4dr Sedan

turbocharged 200hp 2.0L I4 6-speed shiftable automatic AWD

103900 mi

US $700
Dead battery. Would not start. Dead starter motor. 
40750 mi

US $125
Passenger fog light. Foglight light replacement. Purchased part online and dealer fix for under $75. If dealer purchased the part and fix the foglight it would cost $200.  
56000 mi Headlight replacement, new LED bulb. 
69000 mi

US $250
Window regulator driver side front window broke. 
108600 mi

US $260
Battery died 
136400 mi

$600
Starter failed after replacing a new battery 
53320 mi

C $2900
Locking system replaced.  new rear brakelights 
67580 mi

C $1300
Alternator failed - repair required replacement alternator and battery 
89900 mi

C $700
Airbag sensor replaced. After this trip both sensors failed again. 
93000 mi

C $900
airbag sensor 
83700 mi

C $200
HID headlight flickering in and out. New ballast ordered and replaced inside the headlight. 
35000 mi Bad window regulator - driver front. Standard VW/Audi problem. Fixed under warranty. Passenger front started going, 2 weeks later, in shop now. 
36000 mi

US $189
Regulator for Passenger side front window. 
45000 mi Front Driver's side window regulator re-fixed less than 12 months after original repair. Passenger Front Window Regulator. Was reflashed (I was told replaced) 12 months ago, but started clicking again. Customer relations helping to see who will pay for this repair. 
48000 mi

US $300
Revisit after Audi of America offered to pay 40% of the cost of replacing front p-side window reg. Fixed, all done. 
110000 mi

US $200
Satellite radio receiver replaced 
159000 mi Airbag initiator replacement (Takata recall) 
46000 mi Dipped headlight evaluation, no repair done. 
97000 mi

US $300
Replaced wiring harness that connects speaker, power windows, etc in driver's front door (wires in original harness had worn through causing speaker to stop working). 
122615 mi Child safety window switch no longer functions. Informed by dealer that switch has failed. Decided not to repair. NOTE: I have no children and this switch has been used fewer than 20 times in the entire 12 years since purchasing this car new. 
30000 mi

US $250
condensation fails to drain well when vehicle parked on grade leading to "wet dog" smell from vents 
70300 mi

US $1200
A/C wasn't developing pressure - compressor replaced. Problem solved. 

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2006 Audi A4 4dr Sedan

turbocharged 200hp 2.0L I4 6-speed manual FWD

79360 mi

C $221
Replaced window regulator 
33000 mi Window regulator on drivers door went bad. 
62000 mi

US $250
Read seat passenger loosened driver's side airbag wires by sliding feet underneath the seat. 
86000 mi

US $130
Passenger side low beam halogen headlight went out 

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2006 Audi A4 4dr Sedan

turbocharged 200hp 2.0L I4 6-speed manual AWD

48980 mi Front passenger seat sensor Intake flap motor 
147000 mi Replaced airbag under warranty 
51500 mi

US $385
Window regulator replaced on drivers door. Window would no longer roll up or down. Window regulator replaced on drivers door. Window would no longer roll up or down.  
38000 mi Right headlight intermittent failure. Bulb replaced on second visit. Car was purchased as CPO and the problem was dicovered on the first day so the dealer covered the problem. 
48000 mi Center-right vent does not blow sufficient air like the other vents. 
67000 mi

US $400
broken door open signal wire 
32000 mi Passenger window would roll down after driver rolled window up. 
32000 mi Rear view mirror fuse got stretched and wasn't making contact anymore.  
43000 mi Flickering headlights, described under TSB 
34300 mi Rear window safety switch broken. This prevents rear seat passengers from operating the windows. 
53000 mi

US $50
rear left brake light 
87300 mi

US $313
Wipers not switching on. Tech traced issue to short in relay for wipers. Replaced relay. 
97000 mi

US $1261
Front passenger window wouldn't go up - replaced regulator and motor 
62000 mi

US $75
HID headlamp shutting off and reporting as "dipped headlight" in DIS. HID element was replaced. Required removal of front bumper. 
90000 mi

US $450
Error with headlamp AFL reported. Failed component in ballast identified as culprit. Ballast replaced 
98000 mi

US $54
The driver's window control switch stopped operating the rear windows and had to be replaced. 
78740 mi

€125
Battery was dead and at the end if it's lifecycle 
80800 mi

€250
Xenon lightbulb faillure 

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2006 Audi A4 4dr Sedan

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

34720 mi Xenon lights blinking 

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2006 Audi A4 4dr Sedan

255-horsepower 3.1L V6 7-speed shiftable CVT FWD

88200 mi

US $250
Power window failure driver side. Update: passenger side failed later in the month. Both wedged in up position for now. 
106000 mi

US $1400
Power windows never fixed. Nothing done, not included in cost figure. 

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2006 Audi A4 4dr Sedan

255-horsepower 3.1L V6 6-speed shiftable automatic AWD

186660 mi

C $65
Replaced HID headlights, it's a pain in the a## 
215840 mi

C $50
Replace HID headlights... remove front bumper cover, remove headlight assemblies, install new headlights, reinstall all parts. 
226920 mi

C $630
High pressure switch defective, leaking, required replacement, then system recharge. 
133000 mi

US $100
AC not cooling. Found leaky component, replaced and recharged system. right low beam HID headlight would occasionally flicker. Replaced bulb. 

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2006 Audi A4 4dr Sedan

255-horsepower 3.1L V6 6-speed manual AWD

62000 mi

US $50
Audio/Nav system would not recognize CD player which rendered it non-functional. Fix was to remove and replace the same unit. 
90000 mi Intermittant headlight flickering 
78100 mi Intermittent flickering headlight issue repaired by dealer as 'customer curtesy' after many, many complaints. 

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2006 Audi A4 2dr Convertible

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

64000 mi AC was freezing up and then blowing cold air. Water got in the system during some earlier recharge. System was pumped clean and dry then recharged. 

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2006 Audi A4 2dr Convertible

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

53100 mi Recvd check engine code that 3rd tail light was not operational. 

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2006 Audi A4 / S4 / RS4

Engine not specified

36000 mi

US $400
drivers side window regulator went bad at 36k 

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See TrueDelta's information for all Audi models.

2006 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 2006 Audi A4 / S4 / RS4 problems occur, check out our car reliability stats.