DIY Mercedes Benz Diagnostic Testing 1Open the Mercedes' driver-side door and take a seat behind the steering wheel. Commence the vehicle's engine. Each of the dashboard lights will momentarily come on and after that switch themselves off. Look for any warning lights that stay lit. These indicators will let you know what parts of the Mercedes have to have troubleshooting. By way of example, an active "service engine" light signifies the Mercedes' OBD-II method has detected malfunctions. An Anti-Lock Brakes light implies there's a difficulty together with the brakes.
2Turn the engine along with the electrical technique off. Leave the crucial inside the Mercedes' ignition.3Look into the leg-space beneath the steering wheel. There, you'll find a 16 pin-receiving computer system outlet. This Data Link Connector accommodates scanners for all diagnostic systems. Nonetheless, this outlet's place depends upon the year and model of your Mercedes in query. For most automobiles, it'll be under the dash and towards the left or right in the steering column. In some models, it'll be behind an access panel, and in other people, it is going to be out in the open.
4Connect your diagnostic hardware for the Mercedes' DLC outlet. Switch the device on. Most scanners include a diagnostic cable, which connects the scanner towards the DLC. Some devices could plug straight in to the DLC.5Turn the crucial inside the ignition towards the "On" designation. This will bring the electrical method up. Based on the system and also the scanner brand you're operating with, you could possibly must turn on the engine. If your scanner is not going to turn out to be fully operational otherwise, you will should begin the Mercedes.6Enter a code-retrieving command. How to do this depends on the exact device you might be making use of. Configuration, orientation, and programming differs by the brand and method getting employed. It is a lot like how operating systems are distinctive by brand of cellular phone or laptop.
Seek advice from your hardware's user's manual for precise instruction. When the codes have already been retrieved from the system, they are going to appear on the scanner's display screen.7Look up coding definitions. Some device manuals will include such definitions inside the rear, as an appendix. When the manual doesn't include diagnostic coding data Car Diagnostic Tools, you can come across further info on line. OBD-II and ABS codes, by way of example, are comparatively easy to find. Some of the additional complicated systems, like SRS air bags, is going to be just a little extra complicated and may perhaps call for a technical supply book.
8Look up definitions that correspond with each of the codes you copied from the scanner. These definitions will help you make an informed selection. You can either troubleshoot and repair the complications oneself or drive the Mercedes to a mechanic. When you lack practical experience together with the extremely complicated systems Auto tools, like ABS brakes or SRS air bags, seriously take into account involving a repair garage. Your code list will save you dollars in diagnostic costs.
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