2003 Mercedes-Benz E320 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Mercedes-Benz E320

Repair Estimates

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2003 Mercedes-Benz E320
$
468
to $
690
2003 Mercedes-Benz E320
$
155
to $
307
2003 Mercedes-Benz E320
$
398
to $
1,175
2003 Mercedes-Benz E320
$
787
to $
1,261
2003 Mercedes-Benz E320
$
261
to $
436

2003 Mercedes-Benz E320 Problems

Failed Exhaust Catalytic Converter May Cause Rattle From Beneath Vehicle

When the engine is running, but the vehicle is not moving, a rattle heard from beneath the vehicle could indicate that one of the exhaust catalytic converters has failed. The substrate (the internal part of the catalyst that reduces emissions) can loosen and bounce around inside the canister section of the converter—the defective unit will need to be replaced. If this problem is ignored, the substrate can break down and reduce to a size that plugs the outlet pipe, which will cause a sudden loss in power.

Engine Performance Problems Due to Crankshaft Position Sensor Failure

The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance.

Brake Light Switch Failure May Cause ESP/BAS Warning Lights

The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.

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2003 Mercedes-Benz E320 Recalls

Incorrect Software Calibration May Cause Fuel Pump to Remain Powered in a Collision

There is a faulty software calibration that affects several areas including shutting off the fuel supply in a collision. This could cause a fire hazard during an accident. Dealers will reprogram this software. The Mercedes-Benz recall number is 2008 070001. This recall began during August, 2008.

Sensotronic Brake Control System May Default to Basic Hydraulic Mode

Due to deterioration of the wiring harness connection or failure of the hydraulic pump, the sensotronic brake control (SBC) system may default to the hydraulic back-up mode. In the back-up mode, the driver has braking power sufficient to stop the vehicle, but greater brake pedal pressure is required and brake pedal travel will be noticeably longer. Dealers will install a bracket and replacement ground wire to the SBC pump unit on all affected vehicles. Additionally, dealers will inspect and replace the SSC pump unit in certain SL models. The Mercedes-Benz recall numbers are 2005070007 AND 2005110001.

 

The Sensotronic Brake System May Be Disabaled

High mileage combined with a high number of brake actuations, or a high brake actuation frequency, can cause the pump motor of the SBC to run out of permissible tolerances. As a result, excessively high pressure may build the high pressure line of the brake system. If this occurs, the system will switch into the hydraulic function mode as designed. Sensotronic brake control is disabled when the brake system is functioning in the hydraulic mode. Dealers will inspect the SBC hydraulic unit and replace it if necessary to correct this concern. The Mercedes-Benz recall number is 2004 050014.

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2003 Mercedes-Benz E320 Reviews

The MB E320 is a great car overall, we have been very pleased with it since buying it used last year. Pros: Very comfortable, yet responsive ride. Handles the snow surprisingly well. Huge trunk and reasonably spacious back seat. Fits 3 in a pinch. Solid feel, good fit and finish, and a great safety record. Better gas mileage than I expected. We get 30+ on the highway with the V6. Cons: Repair...

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