P1747 Mercedes-Benz Code - Electronic Gear Selector Module: Defective Interaction of CAN With Control Unit Instrument Cluster
Quick Answer
The P1747 code for Mercedes-Benz indicates a problem with the electronic gear selector module, specifically related to a defective interaction between the Controller Area Network (CAN) and the control unit instrument cluster. Common causes include Faulty electronic gear selector module, Defective wiring or connectors in the CAN network, Software issues in the control unit instrument cluster. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1747 Mercedes-Benz indicates Electronic Gear Selector Module: Defective Interaction of CAN With Control Unit Instrument Cluster.
- Common causes
- Common causes include Faulty electronic gear selector module, Defective wiring or connectors in the CAN network, Software issues in the control unit instrument cluster.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1747 Mercedes-Benz Description
The P1747 code for Mercedes-Benz indicates a problem with the electronic gear selector module, specifically related to a defective interaction between the Controller Area Network (CAN) and the control unit instrument cluster. The CAN is a communication network that allows various electronic control units in the vehicle to communicate with each other. When there is an issue with the interaction between the gear selector module and the instrument cluster, it can lead to problems with shifting gears, displaying accurate information on the instrument cluster, and overall transmission performance. This can result in erratic shifting behavior, incorrect gear display, and even the transmission going into limp mode, where it operates in a limited capacity to prevent further damage.
Common Causes of P1747 Mercedes-Benz
- Faulty electronic gear selector module
- Defective wiring or connectors in the CAN network
- Software issues in the control unit instrument cluster
- Water damage or corrosion in the electronic components
- Electrical interference or grounding issues
Symptoms of P1747 Mercedes-Benz
- Erratic shifting behavior
- Incorrect gear display on the instrument cluster
- Transmission going into limp mode
- Loss of communication with the instrument cluster
- Warning lights illuminated on the dashboard
How to Fix P1747 Mercedes-Benz
- Diagnose the specific cause of the issue using a diagnostic scan tool
- Inspect the electronic gear selector module and connectors for any visible damage
- Check the wiring and CAN network for continuity and proper connections
- Update software in the control unit instrument cluster if necessary
- Replace any faulty components and reprogram as needed
Cost to Fix P1747 Mercedes-Benz
The typical repair costs for addressing a P1747 code on a Mercedes-Benz can range from $300 to $800, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to get a detailed estimate from a trusted mechanic before proceeding with the repair.
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Frequently Asked Questions about P1747 Mercedes-Benz Code
1. What are the common symptoms of OBDII code P1747 in a Mercedes-Benz related to the Electronic Gear Selector Module?
The common symptoms include issues with gear shifting, incorrect gear display on the instrument cluster, and potential immobilization of the vehicle.
2. What could be causing the OBDII code P1747 in a Mercedes-Benz?
The code P1747 is often caused by a defective interaction of the Controller Area Network (CAN) with the Electronic Gear Selector Module or the Control Unit Instrument Cluster.
3. How can I diagnose the Electronic Gear Selector Module related issues in my Mercedes-Benz?
Diagnosis typically involves using a professional OBDII scanner to read the specific fault codes, including P1747, and conducting a thorough inspection of the Electronic Gear Selector Module and the wiring connections.
4. Can a DIY enthusiast repair the Electronic Gear Selector Module issue causing the P1747 code in a Mercedes-Benz?
Repairing the Electronic Gear Selector Module issue might require specialized knowledge and tools, so it is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.
5. Is it safe to continue driving my Mercedes-Benz with the OBDII code P1747 present?
It is not recommended to continue driving the vehicle with the P1747 code, as it can lead to further transmission or safety issues. It is best to address the problem promptly.
6. Are there any temporary solutions or quick fixes for the P1747 code in a Mercedes-Benz?
Temporary solutions or quick fixes are not advised for the P1747 code, as it indicates a potential serious issue with the Electronic Gear Selector Module that requires proper diagnosis and repair.
7. How much does it typically cost to repair the Electronic Gear Selector Module issue causing the P1747 code in a Mercedes-Benz?
The cost of repairing the Electronic Gear Selector Module can vary depending on the extent of the damage and the labor rates of the repair shop. It is advisable to obtain quotes from multiple sources.
8. Can a software update fix the Electronic Gear Selector Module issue and clear the P1747 code in a Mercedes-Benz?
In some cases, a software update provided by the manufacturer may address the Electronic Gear Selector Module issue causing the P1747 code. It is best to consult with a dealership for guidance.
9. Will resetting the OBDII code P1747 in a Mercedes-Benz make the issue go away permanently?
Simply resetting the code without addressing the underlying cause, such as a defective Electronic Gear Selector Module, will not resolve the issue permanently. Proper diagnosis and repair are necessary.
10. How long does it typically take to repair the Electronic Gear Selector Module issue and clear the P1747 code in a Mercedes-Benz?
The repair time can vary depending on the availability of parts, the complexity of the repair, and the workload of the repair shop. It is advisable to inquire about the estimated repair time before proceeding.
Discuss the causes and fixes for P1747 Mercedes-Benz OBDII Code
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I have not replaced any parts yet but I was about to order a gear shifter selector box. I was told this was my problem. What's your take on this?
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Do you have any other symptoms or code?
Unfortunately I haven't had that problem and I check a national database of repairs for your model year and there are no records for the P1747 code either.
According to the factory service manual the P1747 code is for the instrument panel and not the gear shifter selector box.
If you have no other symptoms, then you could try just clearing the code for now. -
Any other symptoms, beside the engine code? have you try clearing the code? You could have a defective Instrument Cluster
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Bonjour j ai un souci avec un code p1747 sur mon slk 200 de 1999 ,je n ai plus de compteur de vitesse, plus de compteur tour, plus de température moteur, et voyant abs,plaquettes de frein ,frein a main ,esp,bas,niveau d huile, niveau d eau allumées.
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Bonjour,
Le code P1747 sur votre Mercedes SLK 200 de 1999 indique un problème de communication entre le module de sélection de vitesse (EGS) et le combiné d'instruments via le bus CAN.Les symptômes que vous décrivez — plus de compteur de vitesse, plus de compte-tours, plus de température moteur, et tous les voyants allumés (ABS, ESP, frein à main, niveau d’huile, etc.) — confirment qu’il y a perte de communication sur le réseau CAN entre plusieurs modules électroniques.
Voici ce que je vous conseille de vérifier :
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Batterie et tension système
- Une tension trop basse ou instable peut provoquer des défauts CAN. Assurez-vous que la batterie est en bon état (au repos : >12,5V, moteur tournant : ~14V).
- Vérifiez les connexions de masse (notamment celles près du module ABS et du calculateur moteur).
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Fusibles et relais
- Contrôlez les fusibles liés au combiné d’instruments, au module EGS (boîte auto), au calculateur moteur (ECU), au module ABS et au module ESP.
- Un fusible grillé peut interrompre une partie du réseau CAN.
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Connecteurs du bus CAN
- Inspectez les connecteurs sur le combiné d’instruments et les modules cités plus haut.
- Vérifiez visuellement s’il y a de l’humidité, de l’oxydation, ou des broches tordues.
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Lignes CAN coupées ou en court-circuit
- Sur ces modèles, un problème dans le module ABS ou le combiné d’instruments est courant et peut bloquer tout le réseau CAN.
- Si possible, débranchez un module à la fois (ex : ABS) et observez si les autres fonctions reviennent.
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Scanner avec outil compatible Mercedes
- Certains codes de panne ne sont pas lisibles avec un scanner universel. Si possible, utilisez un outil compatible Mercedes comme Xentry, iCarsoft MB, ou Autel avec support Mercedes.
- Cela vous permettra aussi de lire les codes du module EGS et de vérifier l’état du bus CAN.
Ce genre de panne est souvent lié à un défaut électrique (masse, batterie, connecteur) plutôt qu’un module mort, donc commencez par là avant de remplacer des pièces.
Tenez-moi au courant de vos vérifications, je peux vous guider plus loin.
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