Audi S4 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Audi S4

Audi S4 Problems

Overheating Due to Failing Thermostat

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.

Inspect CV Boots and Joints at Each Service

Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.

Check Engine Light Due to Faulty Torque Converter

A problem with the torque converter can cause the Check Engine Light to illuminate.

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Audi S4 Questions

2004 Audi S4 CEL too rich (1 answer)

My 2004 Audi S4 4.2L CEL came on this weekend the codes are p0174 and p0175 system to rich bank 1 and 2. Check air filter and it looks clean, could this be a Mass airflow sensor? What should be my plan of attach or simply just take it into the shop?

Cheers,

S4 timing chain (1 answer)

Repair costs

I am buying a used car, what are the major issue I should look for.it has 110k thanks (2 answers)

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Audi S4 Recalls

Potential Fuel Leak

The fuel rail is a tube that carries fuel to the fuel injectors. The fuel rail may leak, increasing the risk of a fire. Dealers will replace the affected fuel rail and corresponding seals to correct this concern.

Front Air Bags May Not Deploy In A Crash

In a crash where the first impact deploys the side air bags and a second impact occurs in the front of the vehicle, the front air bags may not deploy. Dealers will update the air bag control unit software free of charge to correct the concern.

Recall 05V096000
ON CERTAIN PASSENGER VEHICLES, THERE IS A POSSIBILITY OF XENON HEADLAMP COATING DEGRADATION OVER TIME. THE LUMINOUS TRANSMITTANCE OF THE HEADLAMP MAY DECREASE OVER A PERIOD OF TIME.

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Audi S4 Reviews

I have owned my 01 S4 Avant 6 speed for 5 years now. I bought it form the original owner with 120K miles on it with service records. My wife drives it daily and has 205K on it. The car still has original clutch, head gaskets, and turbos. Most repairs have been general maintance, but some repairs are costly. Some parts such as EGT sensors, O2 sensors and center driveshaft carrier bearing failure...
Bought my 2001 S4 new in March 2002. It has 149,000 miles now. It has been an excellent car. It is a 6 speed manual with the original clutch. Wondering how much longer the clutch will last. It does not slip but am thinking it must be getting close to the end of its useful life. Am wondering if I should sell it while it runs well or keep it and eventually replace the clutch. Any advice o...
I purchased my first amazing Audi S4 new in July of 2006. My S4 came with the tiptronic automatic transmission. I drove this excellent car for 148,844 miles. Other than normal maintenance, I had to replace the headlights because of flickering problems at about 100,000 miles, and had to replace all coils at about 95,000 miles. These were the only two major repairs the car sustained. Today,...

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